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

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

A historic neighborhood church is reborn as a psychedelic arts collective.

The largest self-built castle in the U.S., six decades in the making.

A house carved into a rock in the 1940s.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

An acoustic anomaly with a mysterious cause.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

An abandoned film set location for a remote spaceport in a galaxy far, far away hides in the Tunisian desert.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

The original movie set for the home of 'Star Wars' hero Luke Skywalker.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

The largest wooden building in the world now houses a fascinating collection of aircraft.

A modernist landscape of water and sci-fi concrete.

The angel of death appears to weep black tears at this grave marker.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

World-famous, Pink's still manages to keep its prized cult fetish status.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

Quite simply the largest tree in the world (by volume).