The unbelievably opulent home built for an infamous newspaperman.

A dark, dank room in subterranean Manhattan was the site of a ghastly murder.

Railroad came. People came. Railroad left. Town died.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

The biggest pinball arcade in the world has over 600 pinball machines, and 300 arcade machines.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

The longest continuous lava tube in Oregon.

Abandoned power station once home to a squatter community, now being developed into an arts center.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

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

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

During the holidays, a vintage subway train whisks New Yorkers back in time.

The abandoned personal amusement park of the King of Pop.

San Francisco Bay's ghost town.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

This abandoned prison castle has become an imposing gallery of graffiti art.

An underground magnet for ever-changing street art.

An eclectic trailer park retreat in the middle of the California desert.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

Abandoned concert venue legendary for its rock counterculture.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

Mysterious glowing orbs float through the desert night.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.