Golden Gate Park's historic collection of plants.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The unbelievably opulent home built for an infamous newspaperman.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

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

A trash dump made beautiful by nature's power.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This iconic tattoo shop has its own onsite museum with artifacts from the early history of modern body art.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

With the touch of a button, you can read a randomly selected short story.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

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

Elevated freight railway turned wildly successful urban park.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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