A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

This black shoreline is made up of exploded lava particles.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

Named for a prominent scout and explorer, this Wyoming state park encompasses a replica of an 1840s trading post, a 19th-century Army outpost, and early 20th-century automobile lodgings.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A cemetery housing wild west legends in South Dakota.

The first declared National Monument in the United States.

At the time of its completion, it was the tallest dam in the world.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Largest man-made excavation on earth!

Look closely and you’ll notice that the color changes a third of the way up the tower.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

The façade of this building looks like a bingo board, but it's really a giant clock by a famed graphic designer.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The ruins of a resort and casino sit on the banks of this blue hole spring that pumps 70,000 gallons of warm, clear water every minute.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

The second oldest continuously operating bar in Louisiana.