An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Outsider art meets paleontology at this roadside reptile repository.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

A desert settlement founded and later abandoned by Hawaiian members of the Church of Jesus Christ of Latter-day Saints in Utah's Skull Valley.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

A deserted hodgepodge of experimental structures designed by nearby university students.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

This blowhole is supposedly caused by a trapped monster.

Vice President Humphrey's final resting place is tucked away in this cemetery along with a few other notable figures.