The last resting place of the famous Native American princess is marked by a haunting monument.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

A clear blue swimming hole with hidden caves, still unexplored.

A natural tidal swimming pool is ringed by bizarrely artistic lava rock formations.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Hawai'i's oldest wooden house was shipped around Cape Horn from Boston in 1820.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

France's national museum of scientific and industrial instruments.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

This bomb shelter-themed bar has barely changed since it opened.

A tunnel with windows, so you don't miss out on the impressive views.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

As part of an 800-year-old tradition, a man parades through town covered in a suit made out of spiky burrs.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

A miniature representation of Canadian cities and landmarks in incredible—and sometimes hilarious—detail.

An exquisite tunnel of cascading flowers.