Site of a former hidden treehouse in New Orleans.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

This Wild West attraction is alive with glitching automatons.

A roadside collection of over-sized iron creations that are a bit more macabre than most.

A fitting attraction for the corn capital of the world.

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

A classic roadside attraction on Vermont's historic Route 5.

A bizarre house filled with an astounding array of collections.

New fungal and bacterial species call this deadly lake home.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

An abandoned stretch of highway, deteriorating next to the operational one.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

A tunnel once abandoned now thrives with graffiti art as an off-limits makeshift gallery.

One of the largest public housing complexes in New York once visited by Eleanor Roosevelt.

Try not to get slimed in Tribeca.

An unconventional space for art and science housed in a massive old warehouse.

Elevated freight railway turned wildly successful urban park.

Once a popular watering hole among longshoremen and shipyard workers, this neighborhood treasure spans more than 100 years of Red Hook history.

Four cars from the old system were once on display, but were removed in 2014.

Lehigh Valley barge No. 79 still gets tugged along - but now it houses a museum and unusual performances.

Lie in a hammock where George Washington stood.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.