This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

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

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

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Op-art architecture designed for happiness.

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

A spherical "micro-nation" in the heart of Vienna.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

An exquisite Baroque church in Vienna's old town.

The solemn exterior conceals an opulent interior of this 17th century church.

Dine amidst exotic plants at this former royal greenhouse.

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

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

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

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

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

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

From cartoon characters to tiny tanks, a guerilla sculptor's little bronze statues are hidden throughout the city of Budapest.

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

This building has survived for more than a century and remains virtually untouched.

This painting of a beloved dog will be on display at the Scottish National Gallery at long as the museum exists.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

A book bound in the skin of an infamous criminal, along with countless other specimens.