A luxury hotel housed in a former 15th century Gothic church.

Huge herds of Asian elephants can be seen walking, bathing, and just chilling at this Sri Lankan park.

This former quarry is now a picturesque gorge that hides a sunken lake.

During the rainy season, this temple is almost entirely submerged, accessible only by boat.

Bell tower juts out from a village buried under a lake.

This Romanian village may have been drowned, but it is long from forgotten.

A luxuriant botanical garden below sea level.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

A town church once nearly submerged by the damming of a river is now hauntingly visible as the water recedes.

A marvel of Byzantine engineering under the streets of Istanbul.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

Nature took her revenge on the "Wickedest City in the World."

Hidden just under the waters around this Turkish island are the ruins of a once great city.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

Thousands of abandoned statues of deities are taken to this hillside in southern Hong Kong.

The largest of London's subterranean rivers and once a mad, bad center of London life.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

The Florence Nightingale Museum is home to the famous nurse's most treasured possession: her beloved pet owl.

The remains of the great moral philosopher reside in a university in London.

Traveling collection of amazing automata.

A tongue-in-cheek arcade where the games are based on everyday life.