The historic tower houses of this nearly abandoned Greek town have been compared to the spikes on an iguana's back.

Large collection from the 3rd millennium BCE.

This town named for the ancient God of War is home to fewer than a thousand people, but it's the birthplace of the Greek Revolution.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

An emerald-green grotto just a short trip from Austin.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

A crumbling hospital from the 1850s on Roosevelt Island.

A decommissioned military complex that's now a modern industrial park.

This abandoned subway station can still be seen on regular commuter trips.