1

Brooklyn Bridge, New York: A family affair with an undersung heroine

Designer John Roebling died from tetanus after his foot was crushed during the initial survey in 1869, leaving his son, Washington, to complete the project. Then Washington developed debilitating "caisson disease" (the bends) from working in the underwater pressurized chambers, leaving him bedridden and barely able to speak. For the next eleven years, he directed construction from his apartment window through a telescope, while his wife Emily became his voice , learning advanced mathematics and engineering to communicate his instructions to the workers.

Emily Roebling essentially became America's first female field engineer, though she received no official title or recognition at the time. She walked the bridge on opening day in 1883, carrying a rooster as a symbol of victory—a moment that should have cemented her place in history but was largely forgotten until recently.

2

Golden Gate Bridge, San Francisco: They said it couldn't be built

Engineers insisted it was impossible: the water was too deep, the currents too strong, the fog too thick. Joseph Strauss, the chief engineer, was mocked by colleagues who called his design "Strauss's Folly." The Navy opposed it, claiming it would obstruct their ships. Environmentalists feared it would ruin the bay's natural beauty. Ferry operators lobbied against it, worried about losing their livelihoods.

Yet construction began in 1933, during the Great Depression, providing thousands of jobs when they were desperately needed. Strauss installed a revolutionary safety net beneath the bridge, saving nineteen men who became known as the "Halfway to Hell Club." Tragically, ten other workers still died when a section of scaffolding fell through the net near the end of construction. When it opened in 1937, the bridge was the longest suspension span in the world . Strauss died just one year after the bridge opened, worn out by the battle to build his "impossible" dream.

3

Sunshine Skyway Bridge, Florida: Rising from tragedy

On a foggy May morning in 1980, the freighter MV Summit Venture lost radar during a violent thunderstorm and slammed into the Sunshine Skyway Bridge. A 1,400-foot section of the bridge collapsed into Tampa Bay , sending six cars, a truck, and a Greyhound bus plummeting 150 feet into the water below. Thirty-five people died instantly. The only survivor was a truck driver whose vehicle teetered on the broken edge.

Rather than simply repair the damaged bridge, Florida decided to build an entirely new one. The new Sunshine Skyway, completed in 1987, features massive concrete "dolphins"—protective barriers designed to absorb ship impacts and prevent another catastrophe. The old bridge's remaining sections were converted into fishing piers, now popular spots where anglers cast lines into the same waters where so many lives were lost.

4

Tacoma Narrows Bridge, Washington - Galloping Gertie's fatal dance

From the moment the Tacoma Narrows Bridge opened in July 1940, it moved—undulating, twisting, and bucking in the wind like a living thing. This rhythmic, vertical bouncing reminded locals of a galloping horse, thus earning the bridge the nickname 'Galloping Gertie.' Engineers knew about the movement but considered it within acceptable limits. For four months, Gertie galloped along, becoming a tourist attraction and a source of local pride. Then came November 7, 1940.

In 40-mph winds, the bridge entered an aeroelastic fluttering that tore it apart in spectacular fashion. The only casualty was a three-legged black Cocker Spaniel named Tubby, left in a car by his owner, who fled on foot. Film footage of the collapse became required viewing in engineering schools worldwide. A new bridge opened in 1950 with crucial design changes, and in 2007, a parallel span was added.

5

London Bridge, Arizona: The bridge they bought by mistake

American entrepreneur Robert McCulloch bought London Bridge in 1968 for $2.46 million and had it shipped, stone by stone, from London to Lake Havasu City, Arizona . Urban legend claims McCulloch thought he was buying the iconic Tower Bridge and was disappointed when his purchase turned out to be the relatively plain London Bridge. While McCulloch denied this, the story persists because it's too good not to be true.

The bridge was disassembled into 10,000 tons of granite blocks, each numbered and shipped across the Atlantic. Workers reassembled it in the Arizona desert like a giant jigsaw puzzle, creating a channel beneath it afterward to make it an actual functioning bridge.

6

Chesapeake Bay Bridge-Tunnel, Virginia: Engineering ambition gone mad

When engineers proposed building a crossing for the 17.6-mile-wide mouth of Chesapeake Bay, skeptics called it impossible. The crossing would need to accommodate massive naval and commercial ships heading to Norfolk, one of America's busiest ports, while also withstanding hurricanes and ocean storms. The solution was audacious: build a structure that would be partly bridge and partly tunnel, diving beneath the water at two points to allow ship traffic through .

The completed structure, opened in 1964, includes two mile-long tunnels, nearly 12 miles of trestle bridges, four man-made islands, and multiple high-level bridges—all exposed to the open Atlantic Ocean. It was immediately declared one of the "Seven Engineering Wonders of the Modern World."

7

Seven Mile Bridge, Florida Keys: Flagler's folly made real

Henry Flagler's dream of extending his railroad to Key West was called "Flagler's Folly" by critics. But Flagler, already wealthy from Standard Oil, was determined to connect the Keys to mainland Florida. Construction began in 1905, facing hurricanes, mosquitoes, brutal heat, and the challenge of building in water up to 40 feet deep. The worst disaster came in 1906 when a hurricane killed over 100 workers—mostly immigrant laborers, whose tragic deaths barely made headlines at the time.

The railroad finally reached Key West in 1912, a year before Flagler's death. For 23 years, it carried tourists and freight until the monster Labor Day Hurricane of 1935 destroyed much of the track, killing hundreds. Rather than rebuild the railway, the state converted the route into the Overseas Highway, with the Seven Mile Bridge becoming its centerpiece . The original bridge served cars until 1982, when a new parallel bridge opened.

8

Mackinac Bridge, Michigan: The bridge that refused to die

Dreams of a bridge between Michigan's Upper and Lower peninsulas dated back to the 1880s, but the five-mile strait seemed unbridgeable. The Great Depression killed early plans, and World War II delayed them further. By the 1950s, the project had died and been resurrected so many times that locals joked it would never happen. Then, engineer David Steinman took on the challenge, designing a suspension bridge that would span the straits despite brutal weather, thick ice, and deep water .

Construction from 1954 to 1957 employed 3,500 workers at its peak. Opening day in 1957 drew 50,000 people, and Governor G. Mennen Williams walked across alongside bridge workers. "Mighty Mac" became Michigan's symbol, though high winds remain dangerous—two vehicles have been blown off in separate incidents, leading to the bridge authority offering free transport for nervous drivers during storms.

9

New River Gorge Bridge, West Virginia: The bridge that became a party

When the New River Gorge Bridge opened in 1977, it was the world's longest single-span arch bridge and the highest vehicular bridge in the Americas at 876 feet above the New River. The structure cut a 40-minute winding drive down to one minute, transforming the region's economy. But locals decided the bridge's annual achievement deserved an equally monumental celebration. Thus "Bridge Day" was born: a festival where the bridge closes to traffic and people are legally allowed to BASE jump and rappel off it.

Every third Saturday in October, up to 200,000 people descend on the tiny town of Fayetteville (population 2,800) to watch hundreds of BASE jumpers leap off the bridge . It's the largest extreme sports event in the world and the only day of the year when BASE jumping is legal in the U.S.

10

Navajo Bridge, Arizona: The bridge to nowhere that changed everything

When the original Navajo Bridge opened in 1929, the closest town was 130 miles away, and the bridge spanned a remote section of the Colorado River in northern Arizona. Critics called it the "bridge to nowhere." But the bridge had a crucial purpose: it was the only crossing of the Colorado River for 600 miles, making it essential for anyone traveling between Utah and Arizona without taking a massive detour.

Over the course of decades, it became a vital link for Navajo Nation residents accessing healthcare, education, and commerce . It also opened the North Rim of the Grand Canyon to tourists, transforming the region's economy. By the 1990s, the original bridge couldn't handle modern traffic, so a parallel span opened in 1995. Rather than demolish the original, it was converted to a pedestrian bridge where you can look straight down 467 feet to the Colorado River.

1

Point Roberts, WA: The 49th parallel accident

Imagine if you had to cross two borders just to get to the market for a gallon of milk. That’s actually a reality for residents of Point Roberts, Washington. That’s because, following the Anglo-American Convention of 1818, the 49th parallel divided Canada and the U.S. In 1846, the line was extended westward and then officially recognized by the International Boundary Commission in 1925.

However, a tiny tip of the Tsawwassen Peninsula poked out just below that line. Since then, the locals have lived in a boundary quirk. To get to the rest of Washington State by land, they must drive through Canada, show their passports, and do it all over again on the way back.

2

Statue of Liberty: Common misconception

If you want to start a friendly argument at a dinner party, ask whether the Statue of Liberty lives in New York or New Jersey. The funny thing is, both answers are technically right . While the statue physically sits in the waters of the Garden State, Liberty Island is legally an exclave of New York. This dates back to a 1664 land grant by the Duke of York in a document so vague and confusing that it took a 1834 Compact between the two states to settle the deal. New Jersey gets the water and the submerged lands, but New York keeps the monument.

However, the Federal Government actually manages the site through the National Park Service (NPS), providing security and maintenance.

3

The State of Franklin: Failed 14th state

In 1784, three counties in North Carolina felt neglected by their government and decided to strike out on their own . They even elected a governor, John Sevier, and printed their own money. They came just two votes short of being recognized by Congress as a formal state.

Eventually, things got heated, and North Carolina sent troops, leading to a small civil war between the locals. By 1789, the dream of Franklin was buried, and the territory became part of Tennessee.

4

Kentucky Bend

If you look closely at a map, there’s a piece of Kentucky that looks like it doesn’t belong. That’s the Kentucky Bend, also called the New Madrid Bend, a tiny peninsula in Fulton County that is almost completely separated from the rest of the Bluegrass State . The strange situation was the consequence of the massive series of earthquakes that took place in that area between 1811 and 1812, which were so violent they famously caused the Mississippi River to flow backwards for several hours. When the dust settled, the river had carved a new path that looped around this small patch of land, surrounded by Missouri and Tennessee instead of Kentucky. The 9 residents living there today go through Tennessee just to get to their home state.

5

The State of Deseret: The empire that almost was

Imagine a state so big it makes Texas look tiny. That almost happened back in 1894, when Mormon pioneers proposed the State of Deseret. The territory comprised what we now know as Utah, most of Nevada, parts of Arizona and Colorado, and a massive chunk of the California coast, including San Diego.

Had it been formalized, it would have been a powerhouse with its own seaport and total control over the West. However, Washington, D.C. wasn’t so keen on one group having that much territory and power, so they whittled it down, and we ended up having the states we know today.

6

The lawless "No Man's Land"

Have you ever wondered what happens when two governments simply give up on a piece of land? Between 1806 and 1821, there was a strip of land in what is now western Louisiana that was, literally, No Man’s Land. Neither the U.S. nor Spain, which owned part of the territory, could agree on the border, so they declared it "Neutral Ground" to avoid armed conflicts . The plan backfired as, with no laws to contain it, it quickly became a favorite for the outlaws in the West —meaning deserters and bandits hiding there were legally untouchable. The conflict was resolved by the 1819 Adams-Onis Treaty, which officially set the Sabine River as the legal boundary.

7

The Republic of the Indian Stream

In the early 1830s, people living in a small area between New Hampshire and Quebec were fed up, and in this case, taxes were the problem. Both Canada and the US were trying to collect taxes, and nobody likes being double-billed . In 1832, the residents essentially said "neither of them can tax us" and formed their own country called the Republic of the Indian Stream. They had their own constitution and Capitol for four years, until 1836, when the militia marched on the disputed territory to reclaim the land. It wasn’t until 1842, when the land dispute and the double taxation were definitively resolved by the Webster–Ashburton Treaty, which assigned the land to New Hampshire.

8

The Northwest Angle: Mapping mistake of 1783

When the Treaty of Paris was signed in 1783 to end the Revolutionary War, the mapmakers used a chart that was flat-out wrong. They thought the Mississippi River started much further north than it actually did. Because of that mistake, a piece of Minnesota got cut off from the rest of the country . To this day, the "Northwest Angle" is the only place in the lower 48 states north of the 49th parallel. Much like Point Roberts, you have to cross a massive lake or drive through Canada just to visit it.

9

The District of Columbia’s "lost" corner

If you look at a map of D.C., you’ll notice it’s missing a chunk; it’s not a perfect square as it was originally intended. Originally, the capital was a perfect ten-mile square diamond , taking land from both Maryland and Virginia. But by 1846, things got tense. Residents in the Virginia portion, which included Alexandria and Arlington, were worried the federal government would abolish slavery in the District, which was the backbone of their economy. They successfully petitioned to have Virginia "take back" that portion of the land and subsequently changed the shape of the national capital forever.

10

UN Headquarters: International territory

If you want to feel international, go to the United Nations Headquarters on the East River in midtown Manhattan, New York. Once you cross that gate onto the 18-acre site, you are technically leaving the United States. You don’t need to show your passport, but that’s international territory, which means it has its own laws , its own security force, and even its own postal service. It is a legal hole in the middle of New York City.

1

Measuring

This is a difference most Americans are aware of: most countries use the metric system rather than U.S. customary units, and most use Celsius instead of Fahrenheit. Countries such as the UK and Canada still use some imperial units in everyday life, but they mainly use the metric system. Another measure that confuses foreigners is the particular way ingredients are measured in American recipes, which often use cups, tablespoons, and teaspoons rather than measurements by weight.

Fun fact: The only other countries that use the Imperial system officially are Liberia and Myanmar.

2

Sales tax

Do you find having to calculate sales taxes annoying? That’s a unique American experience. In the majority of the world, the price you see is the price you pay , because it has the sales tax already added.

Why is it different in America? Sales taxes vary across states , so retailers find it easier to showcase the base price and then calculate the total at checkout.

3

Cutlery use

Many Americans abroad are surprised by the realization that not everyone uses a knife and fork in the same way they do . In fact, no one else does. While most Americans have learned the American style —also called the zig-zag or fork switching method— that involves using the fork in the left hand for cutting and then changing it to the right to pick up the food, European and Latin American countries don’t do this . It might seem like a small difference, but it completely changes the way you eat.

4

Iced drinks

Do other countries not have ice? They do, but they don’t necessarily assume everyone will want it. While serving water and other beverages with ice is customary in America, in many other countries, you need to request it —even during the hottest of summers.

But even if you get ice, many times you will need to specify the amount : the same drink that would be filled with ice cubes in America might come to you with just two or three cubes elsewhere.

5

Date formatting

The U.S. is not completely alone on this one, but there’s a difference big enough to be worth mentioning. The standardized way of recording the date in America is month-day-year , a convention also followed by some Caribbean and Asian countries. But in the rest of the Western world, the conventional format is day-month-year , which can lead to confusion for Americans. In most Asian countries , the most commonly used format is year-month-day .

6

The word ‘American’

In the English language, ‘American’ is the only way to refer to people with U.S. citizenship . Other words, such as ‘Usian’ or ‘Unitedstatian’ have been proposed, but never stuck. This is why many Americans are surprised when other countries —Latin American countries in particular— use ‘American’ for anyone in the American continent , or continents, another big difference. In most European and Latin American countries, there is a different word for U.S. citizens, such as the Spanish ‘estadounidense’ or the Portuguese ‘estadunidense’ .

7

Moving out at 18 years old

This one is not so black and white, but more like a general tendency. Compared with most of Europe, Latin America, and Asia, Americans give serious consideration to the possibility of moving out after high school. Not everyone does, and not everyone can afford it, but it's fairly common.

In other countries, young adults generally move out if their job or education requires it , but they tend to stay at home a few more years if they can.

8

Driving a car as a teenager

America is quite car-centric , especially if you live outside of the big cities. While not everyone can afford to have a personal car —even a second-hand one—, it is common for 16 and 17-year-olds to legally drive their parents’ car, or save for their own.

In the rest of the world, the chances of high schoolers driving themselves to school are much lower, as most countries don’t allow underage kids to get a driving license .

9

Solo cups

Do plastic cups exist outside of the U.S.? They do, but they are not as iconic or as widely used as Solo cups, introduced in the 1970s as a disposable but sturdy cup for parties and events. Many foreigners visiting America are surprised when they realize that solo cups are a real thing , and not something that just happens in movies.

10

Filing taxes

Taxes in the U.S. are not that different from taxes in other countries, except for how they are filed . During tax filing season, thousands of Americans direct their efforts to ensure they have properly reported their income and that their return will match the IRS’s data.

In other parts of the world, however, the one responsible for calculating and filing taxes is the government , while citizens merely corroborate that everything is in order.