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

The United States Capitol's former columns still stand.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A toxic ghost town sitting atop a massive coal fire.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

A kaleidoscopic warehouse-maze of handmade neon signs.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The ghostly remains of an accidental sea.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

The rocks in this arid basin leave trails of movement behind them.

Try not to get slimed in Tribeca.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

France's most famous cemetery, with some of its most curious tombs.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A church of bones, decorated with 40,000 human skeletons.