The remains of a former logging boom town, crumbled away in the forest.

Orcas on display and in the water.

This former coal gasification plant found a curious second life as a popular public park.

Former farm staffed by mental patients is now a public park.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

A bizarre house filled with an astounding array of collections.

The remnants of an early American attempt at missile defense.

Trace the history of writing at this unusual North Carolina destination.

The remains of the iconic train crash from the movie The Fugitive can still be found rusting along the Great Smoky Railroad.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

A sculptor's dream castle turned fantastical ruin.

A peaceful international sculpture garden in upstate New York.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

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

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

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

Built following the War of 1812, this fort has withstood hurricanes for centuries.

A stark reminder of the huge nuclear weapons plant that once stood on the site and its effect on the surrounding area.

The highest bridge in America was built for an almost unnervingly small amount of money.

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

This naturally-sourced hot spring is now home to a clothing-optional resort.

The mysterious, untimely death of a Canned Heat band member still haunts this unfinished home.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."