The sign at the garden gate reads: "These Plants Can Kill."

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

This faux-seedy Japanese arcade is made up to look like a maze of alleys straight out of a cyberpunk dystopia.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Tucked in the back of this amazing antique store is an important piece of medical history.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

On Japan's Tashirojima Island, cats are king.

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

A magical place that lets you play in and explore the world of Studio Ghibli.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

The curious and tiny collection contains some very odd objects.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

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

A priceless collection of the Nation's cryptologic history.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

Museum dedicated to the struggles of the disabled.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

Peek through a transparent pyramid and drink in the mountain made of books.