How many states share a border with just one other state? Only one! Do you know which one it is?

Correct! It's Maine. The Pine Tree State, located in the northeastern United States, shares its only state border with New Hampshire to the west. But wait! It also borders Canada (the provinces of New Brunswick and Quebec) to the north and northeast, and the Atlantic Ocean to the east.

Image: Keith Luke

If someone asked you what the shortest distance is between Alaska and the Lower 48 states, would you know the answer? Most people wouldn't! Well, the average distance between Alaska and the contiguous US is about 500 miles. But that's not the most interesting part. Believe it or not, Alaska is actually closer to Russia than to the mainland United States! At their closest point, Alaska and Russia are separated by just 2.4 miles across the Bering Strait.

Image: Hari Nandakumar

You probably already know that, at 5,525 miles, the US-Canada border is the longest land border in the world. But there are still some fascinating details about it that many people haven't heard before.

The Haskell Free Library and Opera House (Derby Line, Vermont & Stanstead, Quebec) has an international border inside the building! You read that right: Americans enter through one door, Canadians through another. But be careful! International law requires that you exit through the same door you entered.

Image: Sergey Pesterev

The Great Lakes —Lake Superior, Lake Michigan, Lake Huron, Lake Erie, and Lake Ontario— are one of the natural wonders of North America, and they also hold a world record!

That's right! The largest freshwater lake in the world by surface area is right here in North America. We're talking about Lake Superior, which is shared by both the United States and Canada.

Image: Andrew Ling

Since New York City is the most densely populated city in the country, many tend to believe that, as a result, New York State is the most densely populated. However, that's not the case.

The most densely populated US state is actually New Jersey! Its small size, combined with the large population in its urban areas and its proximity to New York City, has earned The Garden State this title.

Image: Rob Curran

Most Americans know which state is the largest by area. But outside the US, some get this fact wrong!

Many people answer "Texas" when asked which is the largest of the 50 states. But in reality, Alaska is far bigger, covering about 665,300 square miles compared to Texas's 268,600. This misconception may stem from Texas's reputation as a "large state" or from the way many maps distort Alaska's true size, making it appear much smaller than it actually is.

Image: Jacob Vizek

Miami is not only the most densely populated city in Florida but also one of its most famous, right up there with Orlando! Perhaps that's why many people mistakenly believe Miami is the capital city of the Sunshine State. However, the capital city of Florida is actually Tallahassee, which is smaller and doesn't quite receive as much attention.

Image: Meadow Marie

Measuring the actual length of a river can be tough due to the serpentine shape that these bodies of water often take. This may be why many people are unsure about which river holds the title of the longest in the US.

Well, here's the truth: At 2,341 miles, the Missouri River is the longest river in the US, though just by a small margin. In second place is the Mississippi River, which stretches for some 2,320 miles and is often mistakenly thought to be the longest due to that small difference.

Image: Samantha Sheppard

Similar to Florida, New York State's capital city is not its largest or most famous.

Contrary to what many people think, the capital of New York is not NYC, but Albany. Although Albany is smaller than NYC, it's an important economic and political hub, and it was chosen as the state capital because of its central location along the Hudson River.

Image: Charlize Kruger

The United States is known for having a large population, partly due to the large size of its territory. But did you know it's also one of the most populated countries in the world? In fact, it's the 3rd most populated, coming right after India and China! There sure are a lot of us, aren't there?

Image: Satyan Chawla