As the Dead Sea continues to deplete, massive sinkholes open along its banks.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

One of the few guarded stops along the great spice route.

A massive, heart-shaped, wind-carved crater in the middle of the Israeli desert.

Underwater restaurant at the coral reefs of Eilat.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

The land is home to swimming ponies and a legendary 18th-century treasure.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A black cat protests the City Guild in Riga's Old Town.

3,000 market stands in five former Zeppelin hangars.

The statue of a legendary giant who carried Christ and shouldered the world's sins.

A vast and unlikely aviation museum kept alive for over 50 years due to one man's tenacity.

This impressively complicated radioastronomy research center was once a tool of Soviet spies.

Spend the night in 1920s Latvia in this historic recreation and movie set.