A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

The magical, mossy forest that inspired Princess Mononoke.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A whimsical village of unique treehouses resides in a Washington forest.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A museum befitting the city responsible for supplying the majority of the world's LSD.

Where manatees are the snowbird vacationers in these balmy Florida springs.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

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

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

A 16th-century horror show built in a lovely Italian garden.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Medicinal spa created with the discharge from a geothermal energy plant.

Started as a kitchen garden, now the second largest botanical garden in the world.

Stroll through a wonderland of stupendous moss-covered trees.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This massive library holds what was once the largest book collection in the world.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

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

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

Most-visited and most-photographed slot canyon in the American Southwest.