Bolivia's needle-like rock formations.

A valley of unique erosion patterns lends to a view like nothing on Earth.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

Constructed on the ruins of a convent, this tower saved countless lives.

This beautiful example of neoclassical architecture is one of Uruguay's most treasured cultural gems.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

This small, ingenious cannon once helped regulate Parisian life.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

One of Jeff Koons’s largest sculptures and his first commemorative work.

The site where two doves fell in love.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

Indents in the pavement are all that remain from a grisly death machine in Paris.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

This church is named for one of the most dramatic tales in the early Christian church.

This unique building in the main square stands out among the city's typically Baroque architecture.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

The floor of this spectacular Baroque sanctuary is covered in memento mori.