Do you know which of these is bigger?

The blue whale can measure more than 80 feet in length and weigh up to almost 300,000 pounds! That's 20 full-grown elephants or over 700 African lions of weight.

Polar bears are enormous and can weigh up to around 1,500 pounds, with a length of more than nine feet. In short, there's a reason that experienced outdoors people take guns while hiking in polar bear territory.

Tom Cruise is a gigantic movie star, but he's only 5 feet 7 inches and 170 pounds. Dwayne "The Rock" Johnson is a giant by comparison. He's 6 feet 5 inches and tips the scales at 260 pounds.

Nothing can tower over the four legends carved into Mount Rushmore, which is a whopping 60 feet tall. Mount Everest is more than 29,000 feet tall. Are you really in shape to climb either one of them?

There are more than 14,000 McDonald's locations jammed into the United States -- and there are about half as many Burger Kings. Either way, you won't have any problem finding a place to stuff your craw with greasy food.

The moose is an ungainly looking creature that can weigh as much as 1,600 pounds, making it one of the biggest mammals in North America. They sometimes exhibit suicidal behavior, charging the headlights of cars.

Alaska is easily America's biggest state. Texas likes to brag about its size, but you could jam two of Texas into Alaska's land area.

The giant squid has the biggest eyeballs of any creature. Their eyes may be as big as 10 inches in diameter, a fact that may help them see a bit better in the blackness of the ocean's depths.

A flagpole is obviously a lot easier to build than a gigantic bonfire. The tallest flagpole in history is 561 feet tall and was erected in Saudia Arabia in 2014. A Norwegian team built the world's tallest bonfire in 2016, and it was more than 155 feet tall.

By its pure overall size alone, you know that Alaska must have a lot of water. It does, with more than 91,000 square miles of water surface area. With about 40,000 square miles of water surface, Michigan is a distant second.

The blue whale is enormous, at up to 300,000 pounds. Full-grown adults can measure more than 80 feet long, and they can live for well over a century.

Since 2012, "Gangham Style," by Psy, has been the most-watched video ever on YouTube. As of mid-2017, it's been viewed nearly 3 billion times, or about 5,000 times on repeat by every 15-year-old on the planet.

The biggest ball of twine is perhaps 11 feet tall and located in Kansas. The tallest Buddha? At about 420 feet tall, a Buddha statue in China takes the cake. Located in Henan Province, it took more than 12 years to complete the big guy.

California, with its huge GDP of roughly $2.5 trillion, could be a country unto itself. Mexico's GDP is just over $1 trillion, but who's counting, right?

The wood bison is the biggest North American animal. Bulls can weigh more than 2,000 pounds, meaning that you do not want to crash into them in the middle of a deserted highway.

Montana is a truly huge state, and perhaps its remoteness and low population are why so many people don't appreciate its size. It is the fourth biggest state in the U.S.

Domino's has nearly 5,100 stores in America alone. Little Caesar's, on the other hand, has about 3,600 locations.

The biggest bird wingspan in the world (12 feet) belongs to the wandering albatross, which can glide effortlessly on even the gentlest breezes. The tallest living man in the world is 8 feet three inches tall. He's a Turkish man named Sultan Kosen, and he's so tall that he needs crutches in order to walk.

Churchill was a huge icon of history but he measured only about 5 feet 6 inches tall. Hitler was 5 feet 8 inches. But American President Franklin Roosevelt towered over both. He was 6 feet 2 inches.

This one's not even close. The Eiffel Tower is about 984 feet tall. Lady Liberty may as well be Baby Liberty -- she's "only" 305 feet tall.

At more than 5.5 million square miles, Maudlandia Desert in Antarctica is the world's biggest desert. By comparison, the Mojave Desert in the southwestern United States is only 48,000 square miles.

In 2010 Iceland's Eyjafjallajokull volcano erupted, causing snags in air travel that affected the entire world. More than 100,000 flights were canceled.

When you consider land area, Russia is the world's biggest country. It is nearly twice the size of the United States.

Completed in 2013, China's Jinping-I Dam is more than 1,000 feet tall. America's famous Hoover Dam, on the other hand, is only about 726 feet tall.

The Andes range of South America is by far the longest mountain range in the world. It stretches more than 4,300 miles. At 3,000 miles, the Rocky Mountain range comes in third.

Barack Obama is right at 6 feet 1 inch. Taylor Swift is no shorty -- she's 5 feet 10 inches. Obama is about 175 pounds ... Swift, closer to 120 pounds.

The Empire State Building in New York City was the world's tallest building for about four decades. In 1973, the Sears Tower took the title, which it has since reliquished. The Sears Tower is 1,729 feet tall; the Empire State Building, 1,454 feet tall.

Earth has a diameter of nearly 13,000 kilometers; Mars, about 7,000 kilometers. Mars might be smaller than Earth, but some scientists consider the Red Planet to be one of our best options for future colonization.

The U.S. Department of Defense has more employees than any other entity on Earth. About 3.2 million people work for the D.o.D. Bombs away!