Rome's semi-secret peephole vista is also a former Crusader stronghold.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

A one-of-a-kind collection of a unique medium.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

This former stomping grounds of the most eminent astronomers of the early 20th century.

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

Hiding amid the largest camellia collection in the country lies a charming children's maze, donated by a secret admirer.

The so-called "Statue of Liberty of Los Angeles" is on a one mutant mission to keep L.A. weird.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

Shop selling 500 flavors of soda has something for everyone.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

The neighborhood of Eagle Rock is named after a gigantic boulder with a shadowy surprise.

A bigger-than-life pun that has become a beacon of altruism.

Sports history, made in the Arroyo Seco.

An Airy Would-Be Solution to a Housing Shortage.

A Masterpiece with a Tragic History.

A stellar example of Art & Crafts architecture, and a movie set to boot.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.

A cobblestone alley with an interesting past.

The artwork that Italians felt California didn't deserve.

The simple auditorium that launched a pop icon's career into the stratosphere.

"The Star Factory" cranked out Hollywood stars like nobody's business.