Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

A non-stop elevator ride in Vienna's city hall.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

See the rare bloom of the "Queen of the Night" cactus at one of the world's largest succulent collections.

Hidden in the garden of physicist Erwin Schrödinger's house is a life-size figure of a cat from his famous thought experiment.

Museum dedicated to wax representations of disfiguring diseases.

This colossal couch is an unlikely monument to Europe's first female Doctor of Law.

Featuring Zürich's only authentic 14th-century plague doctor's uniform!

A 200-year-old tavern challenges guests to finish a glass of wine while hanging from a ceiling beam.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

This massive boulder was hurled into a Zurich church when a gunpowder depot was struck by lightning in 1652.

Use a key to unlock this medieval sewer tunnel.

Underneath the well-known Lindenhof hides a secret cellar documenting Zurich's early history.

A 700-year-old drinking fountain turned charity for the less fortunate of Zurich.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.

Switzerland's oldest public observatory is an important part of the Zurich cityscape.

Ornate lobby of a police station is decorated with colorful murals by Augusto Giacometti.

Every winter, this former planetarium is transformed into a massive, brightly-lit Christmas ornament.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

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

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

This monumental neo-Renaissance tomb in Vyšehrad Cemetery is the final resting place for Czech cultural legends.

A saintly relic hidden in a Prague church basement.