Places adamantum Wants to Go

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

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

The world's only museum devoted to the wonders of fluorescence.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

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

These fantastically named natural pools look like something out of a Scottish myth.

An exquisite tunnel of cascading flowers.

An enormous, inside-out glass globe built in 1935.

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

A snapshot of the city's fascinating voodoo culture.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

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

An eerie, derelict amusement park in Berlin.

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

Rippling sand dunes frozen in the Arizona rock.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

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

A psychedelic labyrinth on the San Francisco bay.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

Its interior is adorned with some of the best examples of early Christian mosaics.