A sacred lake with thousands of sacred carp and a biblical history.

Natural time capsule containing an alien ecosystem.

The lake that fills and empties itself at random.

Roman ruins top white travertine terraces formed by ancient hot springs.

A mud volcano in Indonesia spews out 50,000 cubic meters of mud every day.

Marvel of green building techniques that sings with the wind.

One car at a time please.

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

Cliffs full of fossils at the portal to England's Jurassic Coast.

A midnight snack that lights up the night.

A botched 18th-century canal silenced one of Sweden's most magnificent waterfalls.

Bioluminescent firefly squid light up this Japanese fishing port.

The ruins of an ancient island city built atop a coral reef in the South Pacific are spectacular and strange enough to have inspired H.P. Lovecraft.

An enormous concrete structure built over a nuclear crater.

This chilly Canadian hotel has a four-month lifespan due to the unusual material it's made of.

Train tunnel running underneath Quebec City.

A steamer run aground near Bimini lives a second life as a playground for scuba divers.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

The remains of a ruined mansion memorialize the 1906 earthquake.

The miraculous hydrant that saved the Mission District in 1906.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

The only pollutant in the clear blue water is sunscreen.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.

In oil-rich Azerbaijan, people bathe in the black stuff.