A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

One man's swirling six-acre monument of stone.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The only road through the heart of Glacier National Park.

A whimsical menagerie of devils, krampuses, satyrs, and other horned creatures.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

The first museum in the United States dedicated entirely to posters.

This elaborate towering structure was once famed for its revolutionary height.

An unfinished rail tunnel that has since been used to house cheese and bats.

What's a diner from the 1939 World's Fair doing in a remote Utah mountain town?

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

An underwater statue of Christ blesses the depths off Key Largo.

Beautiful waterfalls grace a canyon visibly torn by a violent tornado.

Unicorns, elephants, and bears, oh my!

An old trolley bridge was converted into a breathtaking garden bursting with colorful flowers.

One car at a time please.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

Watch the newest land on the planet form before your eyes.

A stockpile of childhood lunch pails turned collectibles.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.