New York City's only radical feminist independent bookstore.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Two thousand artifacts from around the world collected by one woman who loved to travel.

An enormous, inside-out glass globe built in 1935.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

Home to a protest movement, a bombing, and a dramatic change in labor history.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A Bibliophile's Dream.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

A unique botanical garden housed in three giant geodesic domes.

Its sunny hues are believed to have inspired the town's color palette.

Iconic red and white plaques show the creative names invented to navigate the city streets.

Its incredible collections are dedicated to preserving Mexico's film history.

Once home to an aristocratic family and a workers' organization, this intricately tiled building now houses a chain restaurant.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

A museum in the former home of Marxist revolutionary Leon Trotsky.

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

Part bookstore, part café, and part forest.

An eerie collection of the surviving structures from a past celebration of the future.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

A lush indoor jungle fills this bustling Madrid transportation hub.

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