A 125-meter long "tribute to the Brazilian people."

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

Beautiful public park off the beaten path and away from tourists.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The biggest museum dedicated to insects in North America, one of the largest in the world.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

Pilgrimage site for star-crossed lovers.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

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.

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

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

Theme park featuring miniature replicas of European monuments.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Climb inside an iron crystal magnified 165 billion times its normal size.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

France's most famous cemetery, with some of its most curious tombs.

A little sculpture with a large wardrobe.

The prototype for all Nazi concentration camps.