An essential stop before plundering, BYO Cutlass.

World's largest collection of serial killer artwork and other macabre exhibits.

An artsy hidden staircase leads to breathtaking views of San Francisco.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

A museum of magic with a Sadist past.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Paris' linguistic guide to the international language of, yes, love.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Legendary frontman of the Doors looms in this giant mural by famed Venice muralist, Rip Cronk.

A quirky collection of figurines backdropped by city views is hidden next to a popular restaurant in the Hollywood hills.

A faux European lane smack dab in downtown L.A.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

One of the last Jazz Age "Wonder Theaters" in New York City.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

New York's oldest magic store.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A terrific purveyor of natural history objects and curios.

This fantastical house shaped like a seashell brings aquatic design to architecture.

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

A library and museum dedicated to typography.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

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