These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

An underground magnet for ever-changing street art.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

In Coyoacán, a pair of coyotes crown a public fountain in reference to the ancient Aztec name of the borough.

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

Inside a busy metro station, an impressive mural depicts the prehispanic city of Tenochtitlán.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

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

Gilded heaven for philatelists and architecture freaks, still in full working order despite sitting atop tremulous ground.

The only castle in North America to ever house European sovereigns.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

Frida Kahlo's childhood home, now a museum of her life and works.

A museum and doll store featuring a surreal and super sanitized version of where babies come from.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

A local dive where religious kitsch, Southern identity, and queer culture collide.

Scattered around Atlanta are little doors with big charm.

This angular brutalist playground turns playtime into modern art time.

In Midtown Atlanta, tons of marble appears to be devouring a Fiat Panda at this unique art installation.

A psychedelic tribute to one of Georgia's most unique artistic visionaries, out of place and time in the heart of Atlanta.

A colorful square marks the heart of the city's LGBTQ community.