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

Oriental bazaar in the heart of Sarajevo.

Bridge that died in war and was resurected.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

The unusual sculptures are believed to be powerful political symbols.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

Dine amidst exotic plants at this former royal greenhouse.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

A 19th-century artistocrat's mansion, turned into a library, hidden in a modern library.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

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

The legendary luxury train passage is commemorated with a charming museum inside its former eastern terminus.

Ancient serpentine sacrifice holder that has stood the test of time.

Legend says if you stick your thumb in the hole and it gets wet, your wish will be granted.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A fountain standing as a testament to a doomed alliance.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

Museum dedicated to the terror regimes of Hungary.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.