Places marksuz Wants to Go

The secret city built by the Manhattan Project.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

2300-year-old Roman road connecting the empire.

This historic national park is covered in the stunning ruins of red rock pueblos.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

A natural gas leak provides a flickering flame beneath a waterfall.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

The final resting place for the remains of 143 Habsburg royalty.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

A fantastic castle rumored to be the birthplace of King Arthur.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The hallucinogenic center of the ancient world.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

A stealthy Apache hideaway that became the haunting site of a mass grave.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

Ancient cliffs resembling a kilt on Scotland’s second-largest island emit an entrancing sound.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.