It was once the base for a series of domestic terror attacks.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

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

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

Once the most densely populated place in the world, this island is now a ghost town.

This Hungarian stilt village is built in a lake that never freezes over due to the power plant that that uses it as a cooling pond.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

The skyline of Montreal includes the silhouette of an unexpected fruit-shaped Canadian staple.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

One car at a time please.

This picturesque abandoned home is rumored to be a spite house.

A defunct all-girls college which may be the resting place of H.P. Lovecraft's real-life Necronomicon.

Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

I fought the law and the precinct caved in.

An eccentric inventor's castle home with its own indoor weather system.

An enormous, inside-out glass globe built in 1935.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

An abandoned gun-funded 19th century utopia.

This decrepit abandoned building is made all the more eerie by its dark history.

Once the gateway to the utopian dream-village of a Civil War embalmer.

America's first public mental health facility.