The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This stunning gothic ruin was a casualty of the Indiana steel industry crash.

Paths are maintained, but trees have taken over plots.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.

The competition: breathe deeply as long as you can.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

New York's oldest concrete structure is being preserved thanks to the gentrification of Whole Foods.

Walk into the 19th century without leaving Brooklyn.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

This city park was once a lookout point for George Washington’s army during the Battle of Brooklyn in 1776.

A massive art collective tries a new take on Brooklyn's DIY music scene—by making it fully legal.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

A modern zoetrope on the New York City subway.

Con Edison’s exotic and heat-loving pests.

Sniff the Titan Arum's rotting flesh.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

The tiniest little stage in New York.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

The greatest real estate coup of all time.