The true depths of these stunning Moroccan caves are unknown.

One of the most spectacular canyons in the world.

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.

Morocco's Argania trees are infested with nut-hungry goats.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

Everyone's favorite clay duo immortalized in bronze.

An inland seafood emporium makes more sense than you'd think.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

The mosaic floor of a 4th-century synagogue features a pagan zodiac wheel alongside traditional images of a Torah ark and menorahs.

This sixth-century synagogue was first reconstructed digitally, then in real life.

This street has over a half-dozen names, all at once.

This cheeky restaurant has a serious devotion to lard sculptures.

A series of modernist, abstract sculptures form a route created as part of the 1968 Olympics' Cultural Olympiad.

When the Soviets destroyed the historic Armenian monastery they somehow left its bell tower intact.

This extraordinary, multi-pillared monument depicts the fascinating history of Georgia.

The widest natural waterfall in Estonia is a sight to see in all seasons.

Visitors can sit and study the board with this Estonian chess legend and International Grandmaster.

The first designer power line in Estonia.

A statue of the Soviet leader still stands in a quiet corner of Estonia’s most Russian city.

Once a year, local students "clean" this statue with a champagne shower.

This Estonian watchtower looks like a big tree with two giant bird nests on it, complete with a "golden egg."

It's rumored this unique Baltic beacon was designed by Gustave Eiffel himself.

Troublesome students were detained in this tiny graffiti-covered university jail.

This unique eatery offers a taste of Estonia's "Onion Route."