1

Alabama: The first 911 call

Today, the number 911 is synonymous with emergency assistance. Yet, before 1968, there was no universal number to call for help. In fact, citizens had to remember specific ten-digit numbers for their local police, fire department, or ambulance service.

Contrary to what you may think, the first 911 call didn’t take place in a metropolis like New York or Los Angeles. The Alabama Telephone Company developed the system to prove that a universal emergency number was a good idea. So, on February 16, 1968, Alabama Speaker of the House, Rankin Fite, made the inaugural call from the mayor’s office in the small town of Haleyville.

2

Florida: The first sunscreen

Florida is famously known as the Sunshine State, so it’s no wonder that it’s the birthplace of the world’s first effective sunscreen. That said, the invention wasn’t driven by beachgoers looking for a tan, but by the war.

In 1944, during World War II, a Florida pharmacist named Benjamin Green was concerned about the severe sunburns suffered by soldiers stationed in the Pacific. So, he developed a substance known as "red vet pet", a thick, red, petroleum product. While it was sticky and messy, it worked by physically blocking UV rays. After the war, Green refined the formula, added coconut oil and cocoa butter, and eventually founded the world-famous Coppertone brand.

3

Iowa: The first electronic digital computer

If you think of the birth of computers, the first thing that comes to mind is probably Silicon Valley or the ENIAC machine in Pennsylvania. However, the world’s first electronic digital computer was built in the basement of the physics building at Iowa State University.

Between 1937 and 1942, Professor John Vincent Atanasoff and graduate student Clifford Berry developed the Atanasoff-Berry Computer (ABC). Unlike previous mechanical calculators, the ABC used vacuum tubes and binary math, and it was the first to separate the memory from the processor.

4

New York: The first commercial brewery

New York City may be the mecca of finance, but in the 1600s, its primary concern was refreshment. Long before the craft beer craze, the first commercial brewery in the New World was established in New Amsterdam (now Manhattan) in 1632.

The brewery was built by the Dutch West India Company on what is now named Stone Street, near Wall Street. At a time when water was often unsafe to drink, beer was a dietary staple for both adults and children. This early industry laid the foundation for New York’s long relationship with brewing, which would eventually make the state a global powerhouse for beer production in the 19th century.

5

South Carolina: The first opera performance

While the high arts are typically associated with the Northeast, the first opera performed in the American colonies took place in Charleston, South Carolina.

In the colonial era, Charleston was a wealthy, culturally vibrant port city, and its citizens loved European entertainment. So, on February 18, 1735, the British ballad opera Flora premiered at a makeshift theater built in a courtroom. Needless to say, this performance predated the formal theaters of Philadelphia and New York.

6

Maryland: The first dental school

For centuries, dentistry was a trade practiced by blacksmiths and barbers who had no formal medical training. This changed in 1840 in Baltimore, Maryland, with the founding of the Baltimore College of Dental Surgery.

Established by dentist Horace Henry Hayden and doctor Chapin A. Harris, it was the first school in the world to offer a formal degree in dental surgery. The founders had initially approached the University of Maryland’s medical school to include dental instruction, but they were dismissed by physicians who claimed dentistry wasn’t that important. They didn’t give up and eventually started their own college, which still exists today as the University of Maryland School of Dentistry.

7

Maine: The first city

There are many really old cities in America. However, the first place to be officially chartered as a city in the English colonies was located in what is now York, Maine. In 1642, English military commander and proprietor of the Province of Maine, Sir Ferdinando Gorges, granted a charter to a settlement then known as Gorgeana. He even envisioned it as a grand capital for his new territory. While the city’s status was eventually revoked when the Massachusetts Bay Colony took control of the area, the charter remains the first of its kind in American history.

8

Michigan: The first paved road

As the home of the American automotive industry, it is only fitting that Michigan would be the birthplace of the modern road. Before the beginning of the 20th century, most American roads were made of dirt, gravel, or bricks, which were ill-suited for the weight and speed of the newly invented automobile.

In 1909, the Wayne County Road Commission paved a one-mile stretch of Woodward Avenue in Detroit with concrete. It was the first time cement had been used to create a long-distance road surface. The experiment was so successful—costing less to maintain and providing a smoother ride—that it became the global standard for road construction.

9

Minnesota: The first shopping mall

The American shopping mall is a cultural icon, but did you know it was born of a desire to escape the brutal winters of the Midwest? In 1956, the Southdale Center opened in the Minneapolis suburb of Edina, Minnesota, becoming the first fully enclosed, climate-controlled shopping mall in the U.S.

The mall was intended to be a town square that would foster community interaction regardless of the weather outside. It featured two levels of shops and a central atrium. The design was so revolutionary that it served as the blueprint for thousands of malls across the globe. Fun fact: Minnesota is also home to the largest shopping mall in the world, the Mall of America, which opened in 1992 in Bloomington.

10

Arizona: The first McDonald’s drive-thru

The drive-thru is a staple of fast food culture. Yet, contrary to what you may think, the first one wasn’t created for convenience but for military compliance. In 1975, a McDonald’s in Sierra Vista, Arizona, installed a service window to feed soldiers from the nearby Fort Huachuca.

At the time, soldiers were forbidden from wearing their military uniforms in public establishments. However, they were allowed to remain in their vehicles while in uniform. To capture the business of the hungry soldiers who couldn’t legally walk inside the restaurant, the owner installed a sliding window in the wall. The concept was an immediate success, quickly adopted by the rest of the venues.

1

National Mall’s hidden tunnel (Washington, DC)

The National Mall landscape in Washington, DC, is so familiar that it’s hard to imagine anything hidden beneath it, but there is more going on below the surface than most visitors realize.

Beneath parts of the Mall, a network of underground tunnels connects buildings like the Smithsonian Institution Building, a.k.a "The Castle", with other Smithsonian facilities, including the National Museum of Natural History. They’re mainly used for utilities, secure staff access, and behind-the-scenes operations that keep the museums running smoothly.

2

Mount Rushmore’s secret chamber (Keystone, SD)

When you look at Mount Rushmore, the first thing you notice is the four faces of George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln, but there’s more than meets the eye. Hidden behind Lincoln’s head is a secret chamber known as the "Hall of Records," a place visitors have rarely ever seen. It was the idea of sculptor Gutzon Borglum, who imagined it as a grand room to hold important US documents and tell our story as a country. Construction began with that goal, but the project was never completed. Today, the chamber remains unfinished, but it's there, waiting to be visited someday.

3

The Las Vegas sign is in another city (technically, Paradise, NV)

Do you have the classic picture in front of the iconic "Welcome to Fabulous Las Vegas" sign? If you snapped it and then drove to another city, we hate to break it to you, but you weren’t in Las Vegas.

The famous sign, installed in 1959, actually sits a couple of miles outside the city limits. In fact, the sign and most of the Strip are technically located in the towns of Paradise and Winchester, unincorporated communities in Clark County, Nevada, not within Las Vegas itself. And that’s no accident: much of the Strip and its casinos were originally developed outside the city in the 1950s to avoid municipal taxes and regulations.

4

Fragments of the Antarctic ice sheets (Denver, CO)

Did you know that the Mile High City stores miles of ice from Greenland and Antarctica? Ok, but how?

At Denver’s National Ice Core Laboratory, part of the Federal Science Center, the ice is kept at around -32.8°F. Researchers study it not just to understand Antarctica itself, but also to inspect Earth’s history. Some of these blocks of ice are hundreds of thousands of years old, and from them, scientists can reconstruct ancient temperatures, track greenhouse gas levels, and even identify major volcanic eruptions preserved in the layers.

5

The hatch at the top of City Hall Tower (Philadelphia, PA)

Counting the statue of William Penn at its summit, the tower of Philadelphia City Hall rises about 548 feet, making it the tallest municipal building in the United States. But hidden high above the street, the statue conceals a little-known secret.

At its base is a small hatch, originally built to give workers access for maintenance. It offers an incredible vantage point over the city, but getting there isn’t easy. To reach it, you have to climb narrow stairways and walk through tight, elevated passageways. Would you dare give it a try?

6

A 112,544 square-foot underground bunker (White Sulphur Springs, WV)

The tense atmosphere and threats of the Cold War led to the construction of thousands of underground bunkers across the US. And one of the most impressive is right beneath the Greenbrier Resort in White Sulphur Springs, West Virginia.

Buried 720 feet into the hillside, this 112,544-square-foot bunker was created to shelter all 535 members of the US Congress in the event of a nuclear attack. Built between 1958 and 1961, it was sealed behind a 25-ton blast door, and it remained a protected secret for more than 30 years.

7

Catacombs underneath City Market (Indianapolis, IN)

In downtown Indianapolis, the City Market has been a gathering place since 1886, filled with local vendors, cafés, and shops. But there’s more to it than what you see above ground. Beneath the market lies a network known as the City Market’s "catacombs."

Despite the name, the reality isn't quite so macabre; they’re a series of brick archways that once supported Tomlinson Hall, a huge market building demolished in the mid-20th century. Today, this underground space remains as a hidden piece of the city’s past, but unlike many places on this list, it’s occasionally open for guided tours.

8

One of history's biggest art heists (Boston, MA)

We all know Boston as the "birthplace of the American Revolution," home to events like the Boston Massacre and the Boston Tea Party. But there’s another chapter of its history you don’t hear about as often.

Just over 30 years ago, Boston was the scene of one of the biggest art heists in history. In the early hours of March 18, 1990, two men disguised as police officers entered the Isabella Stewart Gardner Museum, overpowered the guards, and stole 13 invaluable works of art, including pieces by Vermeer, Degas, Rembrandt, and Manet. To this day, the case remains unsolved, and a multi-million-dollar reward is still offered for information.

9

One of the quietest places on Earth (Minneapolis, MN)

Where do you think the quietest places on Earth are? You might imagine remote landscapes far from civilization, but one of them is actually right in Minneapolis, Minnesota.

Inside Orfield Laboratories, there’s a room with no windows or natural light, an anechoic chamber that absorbs nearly all sound. That’s right: it blocks almost every noise, making the space even quieter than a vacuum. Visitors say the silence is so intense that you can hear your own heartbeat and even the faintest movements of your body. Simply incredible.

10

A strange law (Los Angeles, CA)

Why would a city actually pass an ordinance saying that licking toads is a bad idea? That’s Los Angeles, a place full of quirks, some charming, some downright strange. Even its laws can be unusual.

The Colorado River toad, found in parts of California, secretes chemicals that can have powerful psychoactive effects on humans. Because of the risks, both possession and use of this substance are illegal statewide. In 1994, cases occurred, including a teacher who was arrested for possessing the toad substance. But Los Angeles went a step further, passing an ordinance that specifically bans licking these amphibians. And let’s be honest, the poor toad probably doesn’t enjoy it either.

1

The White House

Though America’s most famous house, located at 1600 Pennsylvania Avenue, is not technically on the National Mall, it has been historically considered part of it due to its proximity and importance. It is separated from the National Mall by the Ellipse public park, and has a direct view of one of the most important Mall landmarks, the Washington Monument.

2

How America’s front yard came to be

When Pierre Charles L'Enfant designed Washington, D.C., in 1791, he envisioned a majestic avenue going from the Capitol to an equestrian statue of George Washington (now the site of the Washington Monument). The chosen name referenced the Mall in London, a fashionable avenue near Buckingham Palace. During the following century, L’Enfants’ plans for the Mall were ignored, and the space was used for canals, railways, and gardens. In 1901, the U.S. Senate decided to expand the number of monuments in Washington, D.C., which led to the renewal of the National Mall and to the addition of most of its iconic landmarks.

3

American history in action

As a space open to all Americans and one that is close to the Capitol and the White House, the National Mall has been the scene of many historical moments, from presidential inaugurations to festivals and protests. Among the most important events to take place in the National Mall, we can remember the 1963 March on Washington, the late 1960s Vietnam War protests, the 1987 AIDS Memorial Quilt, and the 1939 Marian Anderson concert.

4

Washington Monument

Located where L’Enfant initially envisioned an equestrian statue of George Washington, this 555-foot marble and granite obelisk was designed in the 1830s , but was not completed until 1884 due to fund shortages and political disputes. In 2011, damages caused by a 5.8 magnitude earthquake forced the closing of the monument, which reopened in 2014.

5

Lincoln Memorial

Conceived shortly after Lincoln’s assassination in 1865, construction began only in 1914, and the memorial was dedicated in 1922. The Neoclassic structure is surrounded by 36 columns, representing the 36 states that formed the Union at the time of Lincoln’s death . The famous statue of Lincoln in the interior is 19 feet tall, and both the Gettysburg Address and Lincoln’s Second Inaugural Address are inscribed on the north and south interior walls.

6

Jefferson Memorial

Authorized by Congress in 1934 and dedicated on April 13, 1943, the construction of this monument sparked outrage, as i t required clearing parts of the Tidal Basin and cutting down some of its cherry trees to make space for the memorial. In what is known as the 1938 Cherry Tree Rebellion, protestors chained themselves to the trees. In the end, a compromise was reached, and most of the trees were transplanted. The monument, an homage to Jefferson’s estate of Monticello and the rotunda of the University of Virginia, features excerpts of his most notable writings.

7

The Capitol

The first building to be constructed in the National Mall, the House of Congress is located in what was then known as Jenkins' Hill (now Capitol Hill) . George Washington laid the foundational stone in 1793, and the initial building was completed in 1800, but it was set on fire by the British during the War of 1812. It was reconstructed in 1826 and expanded during the 19th and 20th centuries.

8

War memorials

Several memorials across the National Mall honor the thousands of Americans who gave their lives while serving the country . The first war memorial was the District of Columbia War Memorial of 1931, dedicated to honor residents of Washington, D.C. killed in WWI. Among the most significant memorials, we can find the National World War II Memorial of 2004, the Korean War Veterans Memorial of 1995, the Vietnam Veterans Memorial of 1982, and the National World War I Memorial of 2014.

9

FDR Memorial

Despite President Roosevelt’s wish for an understated memorial near the National Archives, the project approved by Congress after his passing was much grander. Instead of a monolithic monument, the FDR Memorial consists of a park-like landscape , with areas representing the four terms he served and the conflicts he led the nation through. It is also the only presidential memorial to include a tribute to a First Lady, in the form of a bronze statue of Eleanor Roosevelt.

10

Museums

The National Mall is one of the places with the highest concentration of museums in the world , most of them managed by the Smithsonian Institution. Among its most famous museums are the National Museum of American History, the National Museum of Natural History, the National Gallery of Art, the National Air and Space Museum, and the U.S. Holocaust Memorial Museum.

11

MLK Memorial

In 1963, the National Mall was the stage for Martin Luther King Jr.’s most famous speech, "I have a dream" , during the March on Washington for Jobs and Freedom. After his 1968 assassination, members of the Alpha Phi Alpha fraternity —to which King belonged— petitioned to build a memorial in his honor on the National Mall, and were allowed by President Clinton in 1996. The memorial features a split rock —inspired by the iconic line "Out of the mountain of despair, a stone of hope."— and a central figure depicting MLK Jr.

12

Parks and Tidal Basin

The National Mall's original plan included several landscaped areas, but they were not designed as part of it until 1901, when the area was cleaned to include open lawns and rows of trees lining the different sections . In 1882, part of the Potomac River was dredged to reclaim 628 acres of land, creating the Tidal Basin and adding space for many of the current monuments. In 1912, the city of Tokyo gifted Washington, D.C., more than 3,000 cherry trees as a sign of friendship, now an iconic part of the Tidal Basin landscape. In 1965, the parks in the National Mall were consolidated as a unit as the National Mall and Memorial Parks.