This bone-filled cave got its name after they found 140 bear skeletons inside.

A muddy alien landscape that is home to rare species of exotic plants.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

Even drowned in an ocean of toxic waste, the remnants of this Romanian village stand tall.

The romantic botanic tunnel feels like a well-kept secret.

Moss and stone turn this waterfall into an otherworldly liquid veil.

Visit an imposing 13th-century Transylvanian fortress lurking not far from the region's more heavily touristed attractions.

This 11th-century structure is one of the oldest churches in Romania.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

An island made out of shells, including a cemetery.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

The world's largest ship graveyard is the product of decades of corruption.

Five ancient libraries, little changed for centuries, preserve a medieval archive of Quranic lore and civic documents

The original resting place of Queen Cleopatra and Mark Antony's only daughter.

Classical ruins that remember ancient Rome's presence in Africa.

Witness traditional silk production in the Uzbek city that's been a hub of sericulture for over a thousand years.

Ancient barriers wrap around what was once an important stop along the Silk Road.

A shrine of fire worship built on top of a natural flame.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

The largest Lenin statue in Central Asia was moved to an empty field rather than being destroyed.

This little gem in the Gulf of Riga has a very rich heritage and distinct culture.

An abandoned textile factory on the "island of crows" was home to Estonia's first workers' strike.