For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

An unassuming secret door once led to a legendary watering hole.

A wedding chapel, vintage clothing shop, and bar all under one roof.

Hundreds of hopeful gold miners came here to get rich, but only two years later the small town was deserted.

An obscure waterfall that looks like something out of a fantasy novel.

A short hike into the mountainside forest reveals a decaying 1890s town.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

A whimsical village of unique treehouses resides in a Washington forest.

Rustic natural hot springs in the deciduous rain forest.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

Stroll through a wonderland of stupendous moss-covered trees.

A walk through the historic city center, under the streets of Seattle.

A giant Troll lurks under one of Seattle's oldest bridges.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

A black cottonwood gets a second life as a home for books.

A few dilapidated structures are all that remain of this deserted former silver mining town.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Natural rock water slides hidden in the remote forests of northern Idaho.

See just what life was like in a 19th-century prospecting town.

A collection of 16,000 antlers crammed beautifully into a small shed.

A little-visited ghost town state park offers a glimpse into Montana’s "Silver Queen."

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

This off-the-beaten-path abandoned town is a relic of Montana's silver mining boom.