Large Hadron Collider and the Birthplace of World Wide Web.

Legend has it fairies gathered at the site of this medieval castle.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

Heralded as one of the prettiest castles in all of Czechia.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

The world's greatest slide descends 18 stories from this looping mountaintop viewing platform.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Constructed along the shores of Lake Zurich, this pavilion is a walk-through work of art.

World's largest permanent maze made of 18,000 conifers.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

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

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

The idyllic island where the philosopher Jean-Jacques Rousseau spent “the happiest time of his life.”

Special benches that play Chopin's music are scattered throughout his native city.

A delightful museum entirely dedicated to the tiny homes of dolls.

The largest toy museum in Poland showcases Europe's history of childhood.

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

Warsaw's fantastically preserved gasworks...almost.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.