Opulent downtown movie theater now houses cars as an indoor parking garage.

Home of an evil witch famous within southern folklore.

An illegally built ramshackle mansion tucked in the middle of Brooklyn is now being turned into condominiums.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

Diego Rivera's massive tiled fountain and failed infrastructure project.

Frida Kahlo's childhood home, now a museum of her life and works.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Hundreds of protractors affixed to surfaces all over the city.

A castle built by an eccentric medieval enthusiast in rural Ohio.

The largest earthwork effigy in the world.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.