One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

This charming candle shop has been in business since 1789.

One man's remarkable private collection of art from around the world.

Located in the world's highest-altitude Dark Sky Community, this observatory welcomes amateur and professional astronomers alike.

Take a dip in the world's largest mineral hot springs pool.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

A ghost town now swarming with dozens of prairie dogs.

The concrete skeletons of an abandoned Swedish town hide among the trees.

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

The haunting peak of an old church is all that remains of a drowned Brazilian city.

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

A Romanesque tower appears when water levels drop.

A submerged village appears when dam levels drop.

As lake waters recede, a German village reemerges after more than a hundred years.

A small flooded ghost town with a few scattered structures remaining.

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.

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

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

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

A marvel of Byzantine engineering under the streets of Istanbul.

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