The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

German and American troops joined forces to defend this fortress during the strangest battle of World War II.

The personal charnel house of Anton Bruckner.

American soldiers discovered Europe's best one-liner at the end of World War II.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

This sublime architectural marvel is a rare example of an expressionist church.

Copenhagen's celebrated theme park and gardens.

Russian history in San Francisco.

This turn of the century masterpiece has a mysterious goaty interloper.

This 19th-century church is now a popular roller rink.

The remains of a ruined mansion memorialize the 1906 earthquake.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

One of the world's largest collections of pharmaceutical artifacts.

The largest underground lake in Europe.

An 11th-century fortress home to one of the most influential royal houses in medieval Europe.

The last woman executed for witchcraft in Europe is remembered in this Swiss museum.

One of a series of no-purpose kinetic artworks by Swiss sculptor Jean Tinguely.

A Swiss board game museum housed inside a picture-perfect castle.

This simple apartment may have inspired some of the most important theories in the history of science.

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

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

Caves famous for the dragon-slaying saint who lived there.

The most impressive of Basel's three remaining city gates.