Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

This one-time health resort was used by aristocrats around the world.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

Haven for Cape Fur Seals, until the Ring of Death of jumping Great White Sharks arrives.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

The largest salt lake in the Sahara is mysteriously alluring.

The most famous location in China was home to whole dynasties worth of imperial rulers.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Baroque celebration of the end of the Great Plague of Vienna.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

The world's second-largest sundial, made entirely out of stone.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

A dark, narrow tunnel that leads to a charming lake and waterfall.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

Fortified medieval tower house with lovely roof garden.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

A mysterious castle built as a monument to lost love.