An abandoned water sports stadium that has become a haven for graffiti and decay.

Over 120,000 curious objects that have shaped our modern world.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

Former villa and estate of James Deering developed to preserve native tropical forests.

A mysterious castle built as a monument to lost love.

Florida castle built with aluminum printing plates.

A monument celebrating the idea of reaching inaccessible places.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

A crumbling hospital from the 1850s on Roosevelt Island.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

"We Seceded Where Others Failed."

A church of bones, decorated with 40,000 human skeletons.

Eyam took steps to quarantine themselves and keep the plague from spreading.

A nude beach alongside a washed-out road.

Bat house that has only ever housed bat for one night; they all flew away and never came back.

For divers and music lovers, the Florida Keys' Underwater Music Festival provides the best of both worlds.

The largest freshwater lake in the Florida Keys.

This dramatic sea spire is home to the world's rarest insect and is part of the lost continent of Zealandia.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

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

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

The world's largest bioluminescent area was undiscovered by science until 2005.

A failed, un-built suburb that has been going feral for decades.