A park where people have been going to feed friendly pigeons since the 18th century

This tiny home was originally a narrow alleyway.

An iconic British fixture in an unconventional color.

Hawai'i Volcanoes National Park is home to one of Polynesia’s largest petroglyph fields.

A centuries-old bar once frequented by Picasso, Hemingway, and Dalí.

The haunting beauty of this little-visited wreck makes it a true hidden treasure.

A mysterious, abandoned Chinese building in Mexico pays homage to the area's East Asian immigrants.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

One of Mexico's youngest major cities still holds on to this structure representing its short modern history.

Hike up to this abandoned hotel for one of the best panoramic views of the island of Gozo.

This abandoned Brutalist tower looming over the M6 Motorway once featured a restaurant.

Valletta’s outdoor theatre stands within the ruins of a 19th-century opera house.

This historic hotel was once home to Henry David Thoreau and rumored to be haunted by ghosts of fallen soldiers from the American Revolution.

A surreal, interdimensional shopping center and portal to another universe by Meow Wolf.

This ruined castle is said to be the legendary keep of a Viking princess.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

Widely advertised as Amsterdam’s narrowest street, this passage was once a highlight of the Red Light District before its windows closed.

The eyes and ears of this tower keep watch over Malta’s Grand Harbor.

Both the World War II Allied Forces and NATO have used this modern bunker underneath Malta’s capital.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

This windmill has been grinding pigments for traditional paints for more than 200 years.