This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

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

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

This hidden art nouveau gem was designed by an architect in search of a national style.

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

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

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.

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

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

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

A fake Transylvanian castle houses a cathedral of antlers.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Museum dedicated to the terror regimes of Hungary.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A quaint Russian village in the middle of a German metropolis.

A shrine built to combat the bad karma of a commercial venture.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”