Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

A spiral staircase twists to the top of this unusual Czech lookout tower.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

Of all the houses that grace this neighborhood, only one is a testament to surreal architecture.

A cheeky architectural easter egg.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

The world's largest collection of intentionally useless inventions.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

This quiet, unassuming spot in Budapest was the birthplace of the bloody 1956 Hungarian Revolution.

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

World's tallest cigar-shaped radio tower.

A beautiful 19th-century mansion slowly crumbled and became a 'ghost house' after World War II.

Once a bridge over the River Begej, now high and dry.

A maze of underground tunnels beneath one of the most beautiful forts in Serbia.

The home of a deceased Hungarian artist is now on display for visitors.

A collection of items from a way of life that no longer exists.

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

A museum dedicated to the former country.

An abandoned monument remembering the "Pančevo Holocaust" now stands as a shadow of its former self.

Religious perseverance and cultural coexistence manifest in an architectural gem that multiple wars couldn't topple.