Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

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

One of the best views of the city is tucked away at the top of a water tower.

With its vaulted ceiling and gilded details, this University of Washington library would feel right at home inside an old palace.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

See more than 150 sculptures, stained glass windows, and famous works of art all rendered in marzipan.

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

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A fake Transylvanian castle houses a cathedral of antlers.

This statue honors one of Budapest's most beloved literary characters.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Twelve towering statues once destined for Pécs Cathedral, now sheltering under arches.

The metal leaves on this tree are engraved with the names of Holocaust victims.

Once the home of a hermetic monk, this cave now houses a small church.

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

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

One of the largest Roman settlements in Portugal.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This tile-work piece featuring a chicken riding in carriage is both a remarkable artistic creation and a social commentary of politics and culture in 17th-century Portugal.