A submerged archeological park still holds the wonders of a Roman Sodom.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

One of the world's largest ancient burial mounds.

Enormous underground chamber built to detect 'ghost particles' of the universe.

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

A magical place that lets you play in and explore the world of Studio Ghibli.

A deadly ancient portal to the underworld.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

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

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

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

One man's quest to fix his toilet unearthed over 5,000 artifacts spanning more than 2,000 years of history.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Ancient Egyptian relief, claimed to depict an electrical light.

An ancient iron pillar in Delhi that seems to be rustproof.