One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A crumbling hospital from the 1850s on Roosevelt Island.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A cramped wooden attic that once housed one of the world's first movie studios.

This rickety old shed hides a trove of secondhand literary treasures.

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

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

A psychedelic labyrinth on the San Francisco bay.

The labyrinthine storm tunnels beneath the city of Melbourne are ruled by a band of urban explorers.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.

Started nearly 100 years ago, this science experiment just keeps on going, ever so slowly.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

This abandoned fishing settlement may well be the greenest village in the world.

Plenty of old carney magic still haunts this photogenic amusement park.

The abandoned medieval theme park was meant to be the "Disneyland of the Philippines."

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

A former squatter's paradise outside Prague.

The attic and basement house two museums stuffed with oddities like swallowed spoon handles and a shrunken head.

Nature is leading a successful mutiny on this century-old freighter.

An artsy hidden staircase leads to breathtaking views of San Francisco.