This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.

This translucent sculpture represents a quintessential component of New York City's skyline.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The world's most active stratovolcano is almost always erupting.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

A geological mystery on Camelback Mountain.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

The oldest giants in Catalonia are now displayed in a 14th-century Gothic church.

Turntable anonymously received orphans, alms, and groceries.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

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

This semi-secret storybook hedge maze is also the oldest garden in the city.

A beautiful but toxic fountain of mercury.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Ancient Peruvian fertility temple or modern money-making hoax? Either way these monoliths still look like penises.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

The Uros people live on floating reed islands in lake Titicaca.

A turquoise lake within a volcanic crater.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.