This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Thousands of effigies of Buddha watch from caves set high above a legendary river, plus whiskey.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This Cambodian riverbed is covered in ancient Hindu carvings both above and below the waters.

The world's largest reflecting pool is just two centimeters deep.

Tour the sci-fi-esque reality of governmental disease management.

What remains of the summer palace of King Kamehameha III.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Software company Epic Systems has created one of the strangest and largest workplaces of all time.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The world's most remote airport.

The largest stone moai on Rapa Nui.