1

Big Mac (McDonald's)

Image: amirali mirhashemian

Two beef patties, shredded lettuce, dill pickles, onions, cheddar cheese, and a special sauce, all topped with two seeded buns. That's the Big Mac, McDonald's flagship product and one of the world's best-selling fast food dishes.

The idea of the Big Mac as we know it today was originally conceived in the mid-1960s by entrepreneur Jim Delligatti, owner of one of the brand's first franchises. The name of the iconic burger, however, was suggested by a 21-year-old secretary working in McDonald's advertising department.

2

Classic Pretzel (Auntie Anne’s)

Image: Pierre Gui

If we talk about the best fast food snacks, pretzels must be included. In the United States, "pretzel" is synonymous with Auntie Anne's. This franchised chain, founded in 1988 , now boasts more than 1,300 stores across the country.

Everyone has followed the scent of these freshly baked pretzels at the mall or the airport at least once. It’s impossible to resist their buttery, salty, and delicious flavor that transports us to another world entirely. No wonder their slogan is "Pretzel Perfect"!

3

Curly fries (Arby’s)

Image: Chait Goli

Fries never disappoint, but if they come in a novel spiral shape, well-seasoned, and perfectly sized to devour in one bite, we're looking at one of the most incredible fries ever created.

While Arby's may not have invented curly fries, it was certainly the company that brought them to fame. Arby's introduced these crispy and delicious Cajun-style seasoned fries in 1988, and they have been a hit ever since.

4

Chicken tenders (Popeyes)

Image: Samuel Isaacs

Many fast food chains offer their version of the chicken nugget, but since Popeyes specializes in fried chicken, it's no surprise that they have one of the best versions of chicken tenders on the market.

If you haven't tried Popeyes' take on this classic American dish, you should. Their tenders are famous for their juicy chicken and their secret blend of crunchy coating. Pair them with the dipping sauce of your choice, and you’re good to go!

5

Cajun fries (Five Guys)

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Five Guys is best known for their delicious burgers, but perhaps the dish that sets them apart from other chains is their Cajun fries.

Tender on the inside and crunchy on the outside, these fries are truly unique. Once fried, they are tossed in a special blend of Cajun spices —garlic powder, cayenne pepper, paprika, onion powder, and more! They are flavorful with just the right amount of spice. Have a kick with Five Guys' cajun fries!

6

Glazed doughnut (Krispy Kreme)

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Krispy Kreme has been around since 1937, and in those many years of history, it has created hundreds of different doughnut flavors. Yet, the glazed doughnut remains a classic that never fails to impress.

Its light, fluffy, melt-in-your-mouth texture paired with that crackly glaze transports anyone back to their childhood in an instant—especially if you're lucky enough to get them fresh out of the oven!

7

Fried chicken (KFC)

Image: Aleks Dorohovich

One of Popeyes' biggest competitors is, without a doubt, Kentucky Fried Chicken. While Popeyes is known for its chicken tenders, KFC is famous for its giant buckets of fried chicken.

KFC's signature dish is fried, on-the-bone chicken pieces seasoned with Colonel Harland Sanders' "Original Recipe" of 11 herbs and spices—and we all love it. Whether you have them at a Fourth of July celebration or during a football game, KFC's fried chicken has that nostalgic effect that keeps you going!

8

Whopper (Burger King)

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If there's one thing we've always associated with Burger King, it's that distinctive grilled flavor. And the best representation of that flavor is its signature dish, the Whopper burger.

Although the ingredients of this gigantic sandwich, created in the late 1950s , are quite simple—one beef patty, lettuce, tomato, and pickles—it’s a favorite among fast food lovers around the world.

9

Italian B.M.T. (Subway)

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Subway is one of the largest fast-food chains in the world, specializing in submarine sandwiches. While everyone can create their own custom sandwich with fresh ingredients of their choice, Subway has a best-selling sandwich that has become an all-time classic.

Subway's Italian B.M.T.—short for "Biggest, Meatiest, Tastiest"—is served on freshly baked bread and filled with a combination of three types of deli meats: salami, pepperoni, and ham. According to lore, the name also references the Brooklyn-Manhattan Transit subway line. Did you know that?

10

Blizzard (Dairy Queen)

Image: ROMAN ODINTSOV

A list of the best fast food items wouldn't be complete without including at least one ice cream product. Many chains offer incredible alternatives, but Dairy Queen is, well, the queen of soft serve.

Dairy Queen's staple product, the Blizzard, was introduced in 1985 , and that same year, the company sold more than 100 million desserts. Today, there are almost 20 different Blizzard flavors, each with the best toppings. From cookies to candy, there's a delicious option for everyone!

11

Baconator (Wendy’s)

Image: Batu Gezer

Wendy's is an American fast-food restaurant, founded in 1969, famous for its square patties. It offers a large number of products, all equally delicious. But even though it was only introduced in 2007, the Baconator has become one of its flagship products, helping the company increase its sales.

A perfect combination of beef, American cheese, and crispy smoked bacon makes this burger a favorite among consumers across the country.

12

Onion rings (Burger King)

Image: Alejandro Aznar

French fries are the ultimate fast food side dish, but every once in a while, it's nice to switch things up and try something new. Burger King's onion rings are definitely a safe bet.

Tender and sweet on the inside, and crunchy on the outside, this classic American treat consists of sliced onions covered in batter and breadcrumbs, then deep-fried. Overall, it's the perfect snack for dipping into your favorite sauce!

1

What are bills made of?

Unlike other currencies, dollar bills are not made of paper or plastic. U.S. dollar bills are made from a special fabric blend composed of 75% cotton and 25% linen. This mix makes the bills extremely durable and resistant, and they can be folded about 4000 times before tearing.

2

What bills are valid?

Any U.S. dollar bill that was legally printed is valid, no matter how old, as American currency does not have an expiration date. While some bills might not be accepted by businesses of foreign exchange services due to their condition or if they are a discontinued version of the bill, the bills themselves are still valid, and American banks will accept them, though they might take them out of circulation.

3

American leaders

Five bills have a depiction of an American president. The exceptions are the $10 bill, with Alexander Hamilton on the front, and the $100 bill, with Benjamin Franklin. The $1 bill, depicting George Washington, is extremely symbolic: several elements are repeated 13 times as a nod to the thirteen colonies, and it showcases the Bald Eagle and the Eye of Providence as a sign of God watching over America.

4

A change in size

Did you know that dollar bills used to be so big that they were nicknamed "horse blankets"? Original dollar bills were 7.4 × 3.1 inches. In 1929, the Treasury Department reduced the size of bills to 6.14 × 2.61 inches to reduce production costs and materials. Old bills, though still valid, are worth much more as collector items.

5

Uniformity

Besides their value and design, all dollar bills have the same size (6.14 × 2.61 inches), color, and weight (1 gram) , which sets American currency apart from other countries where bills of different values are differentiated by size, color, or both. Why doesn’t the U.S. implement differences among bills? The cost of adapting vending machines, bank drawers, and ATMs to new bill sizes would cost billions of dollars.

6

Hard to copy

Originally, dollars were not green, but black. As time passed, green ink was favored, as it was cheap and did not fade as much as black. The new color also prevented people from using black-and-white cameras to create counterfeit money. Currently, dollar bills are predominantly green, but newer versions also include extra colors, such as pink, orange, or purple.

7

A $100,000 bill?

Have you ever seen a $500 or 1,000 dollar bill? What about a $100,000? Up until 1945, the U.S. Treasury printed $500, $1,000, $5,000, $10,000, and $100,000 notes , in addition to the values currently in use. These higher-value notes were mainly intended for bank and government use, but were sought by criminals as they made it easier to hide large amounts of money. Even though they were officially discontinued in 1969, these notes are still valid, though rare, and they have a high worth as collector's items.

8

No numbers

Unlike bills, American coins have different sizes and colors related to their value. Originally, gold, silver, and copper were used for coins, but modern coins are made of copper, zinc, or nickel. Besides their size and design, the value of each coin is printed in letters, not in numbers , alongside depictions of American presidents.

9

Liberty for all (the coins)

By law, all American coins must include six specific details : the word ‘Liberty’, the name of our country, the national motto "In God We Trust", the oldest American motto "E Pluribus Unum", the value of the coin, and the year. Each coin also includes a mint mark that shows where it was made: "P" for Philadelphia, "D" for Denver, "S" for San Francisco, and "W" for West Point.

10

A global currency

The American dollar is one of the most powerful currencies in the world, acting as a backbone for international trade and finances. It is estimated that two-thirds of the physical dollars in circulation are outside American territory. Besides the U.S. and its territories, eight sovereign nations have the U.S. dollar as their official currency, with several more accepting it as legal tender.

1

There's an unexplained billion-year gap

Look closely at the canyon walls, and you'll notice something strange: a clean, sharp line where ancient rock simply stops, and a much younger layer begins directly above it.

This geological puzzle is called the "Great Unconformity," and it represents over a billion years of rock layers that are simply absent , as though that stretch of time never happened. In some spots, rock dated 1.8 billion years old sits directly beneath rock that is only 520 million years old. Where did the missing billion years go?

The leading theory involves the violent breakup of an ancient supercontinent, but scientists are still piecing it together.

2

During the Cold War, it hid a nuclear fallout shelter

During the Cuban Missile Crisis in 1962, the U.S. government converted part of the Grand Canyon Caverns into a fallout shelter. This dry cave system, more than 200 feet underground, was stocked with enough food and water to sustain 2,000 people. Naturally, it was never occupied, and the supplies were never used.

The caverns have since been transformed into a tourist attraction, with organized tours winding through the same underground chambers that were once intended as a refuge from nuclear war. You can even book a night's stay there.

3

The Federal Aviation Administration was founded after a crash over the canyon

In 1956, two commercial passenger planes collided in midair over the eastern Grand Canyon, killing all 128 people on board both crafts. Rescue teams struggled to reach the wreckage deep inside the canyon, and the extreme heat of the crash had caused the planes' aluminum to fuse with the bedrock. There were no survivors.

The disaster exposed a terrifying truth: the U.S. air traffic control system was dangerously outdated, relying on pilots' visual estimates and rough guesswork from controllers , with no way to separate fast-moving aircraft from slow ones, or instrument-flying planes from those navigating by sight. Congress responded by passing legislation that created both the Federal Aviation Administration (FAA) and the National Transportation Safety Board.

4

A hoax suggested that an Egyptian civilization had lived there

In 1909, the Arizona Gazette reported that an explorer named G. E. Kinkaid had discovered a vast underground citadel inside the canyon, filled with artifacts linked to ancient Egyptian civilization. He even claimed the expedition had been funded by the Smithsonian.

This story described hieroglyphics on the walls, mummies in the chambers, and relics pointing to a direct connection with the Egypt of the pharaohs. It was incredibly detailed, and it was, of course, a hoax. No evidence for any of Kinkaid's claims ever surfaced.

5

Fewer than 100 people have ever hiked its full length

Among the few people who have completed the through-hike of the Grand Canyon is Jen Hogan, the first woman to accomplish it, finishing her journey in 2021–2022.

It’s a full 800-mile length below the rim. The route involves extreme heat, flash floods, near-impassable areas, and stretches with no water or trail whatsoever. Around 60 or 70 people have reportedly accomplished it. This makes it one of the most exclusive feats on Earth.

6

The Grand Canyon's rocks predate dinosaurs entirely

Visitors scanning the canyon walls for fossils are often surprised to learn they won't find any dinosaur bones here. The rock layers of the Grand Canyon are simply older than dinosaurs. This fact alone can be shocking: staring at its walls means staring at marine fossils from as far back as 1.2 billion years ago. Some of its caves hold the remains of ancient mammals. The canyon is a window into a world that existed long before the dinosaurs, when the land that is now Arizona lay beneath a shallow sea.

7

The park is bigger than Rhode Island

Numbers alone rarely capture the Grand Canyon's scale, so here's a different approach. Rhode Island covers about 1,214 square miles, and the Grand Canyon National Park spans 1,904 square miles.

The canyon's depth exceeds four Empire State Buildings (which is 1,454 feet) stacked on top of one another. That’s 6,093 feet at its deepest point.

8

But it's not the deepest canyon on Earth

For all its grandeur, the Grand Canyon does not hold the depth record. Pictured above, the Yarlung Tsangpo Grand Canyon in Tibet, China, plunges to 17,567 feet, which is nearly three times deeper. Carved by the Yarlung Tsangpo River as it cuts through the eastern Himalayas, that canyon is so remote and extreme that it remained largely uncharted until the late 20th century.

9

It is home to a pink rattlesnake found nowhere else on Earth

The Grand Canyon Pink Rattlesnake has a pinkish-red coloring that matches the canyon's own distinctive rock walls so closely that it's nearly invisible. It is found nowhere else in the world. Officially classified as Crotalus oreganus abyssus , it has darker diamond-shaped markings along its back that deepen the camouflage further.

10

There's a village at the bottom: Supai Village

For over 1,000 years, the remote village of Supai has been home to the Havasupai Tribe, the People of the Blue-Green Waters. It is located an eight-mile hike from the rim, but sits roughly 3,000 feet deep inside the Grand Canyon.

The U.S. Department of Agriculture has called it the most remote community in the contiguous United States, and it has no automobiles and no road access. The only ways in are on foot, by mule, or by helicopter. It is also the only place in the United States where the postal service still delivers mail by mule train.