Eat the ultimate iteration of Portugal's most beloved pastry.

One of Europe's largest groups of dolmens remains largely off the typical tourist track.

This star-shaped military outpost is now simply trying to protect itself from neglect.

The ruins of a 16th-century bridge loom over Olivença's sovereignty.

You can cross from one country to another in a single hop on this little bridge.

Bonsai trees that are up to a thousand years old.

A remarkably well preserved tower dating all the way back to the Iron Age.

One of the largest fleets of armored vehicles in the world, sitting out in the California desert.

From under the bed of one of the co-founders, this server helped launch the notorious file-sharing website.

This mysterious underground cave in Shropshire dates back to the 18th or 19th century.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

A sacred lake with thousands of sacred carp and a biblical history.

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

A lonely beacon, precariously perched atop a remote sliver of rock.

Far from the shore, this sandy victim of the Skeleton Coast looks like it was plopped in the middle of the desert.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This isolated island is often capped by its own fluffy cloud.

The original place where water met land in the City by the Bay is outlined in brass.

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