During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

Golden Gate Park's historic collection of plants.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

The first park built over a freeway is a brutalist masterwork.

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

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

Historic funicular railway, believed to be the shortest railroad in the world.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

San Francisco's newly reopened hands-on science museum.

Macabre astrological automaton clock dating to the late 1400s.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A museum dedicated to the history and exploration of both popular music and science fiction.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

France's most famous cemetery, with some of its most curious tombs.

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

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

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

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

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.