One of the oldest medical collections in Europe focusing on rare surgical instruments.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

The atmospheric road was never meant to be so creepy.

Staves, storm-calling, and of course, necropants.

Olfactory delights in San Francisco's Botanical Gardens.

The most visited, and possibly most controversial, museum in Germany.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Rainbow-hued local gem in Venice.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A beautiful geyser under environmental threat.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

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

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

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A beautiful 62-acre Catholic shrine and botanical garden.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A house carved into a rock in the 1940s.

The rocks in this arid basin leave trails of movement behind them.

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

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

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.