This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

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

Romania's triumphal arch looks out over Bucharest.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

An homage to the medieval rulers of Bulgaria.

An abandoned saucer-shaped monument in the Bulgarian mountains.

The remarkably well-preserved final resting place of a powerful ancient Thracian king.

Said to be the only museum in the world dedicated to the most classic of all blooms, the rose.

UNESCO-protected ancient burial ground.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

Sofia's legislative center is continuously reinventing itself.

This historic black and white monastery is one of Bulgaria's architectural jewels.

"Holy Wisdom" overlooks the city that became its namesake.

This living labyrinth made entirely of thorns is filled with art.

The floor of the oldest surviving synagogue in the Americas is entirely covered in sand.

This tiny tropical village was sick of anonymity so the locals made this sign, which actually changed the name of the town.

A musical instrument played by the sea.

Single runway interrupted by a busy road that cuts across its middle.

Come for the flowers, stay for the bats!

The final resting place for the remains of 143 Habsburg royalty.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

The most visited, and possibly most controversial, museum in Germany.

Lady Liberty's original designer installed a little clone in this French fountain.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.