The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

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

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

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

No one really knows how these old hobby horses got here, but the herd keeps growing.

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

This huge stew pot is the focal point of the "Community Soup" event, which honors tradition and soup.

Sculptures, jams, and the wild west collide at this folksy retreat.

Sofia's legislative center is continuously reinventing itself.

A vast Communist-era exhibition space in the Bulgarian capital.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

This isthmus in the Bahamas narrowly separates the roiling Atlantic from the cool Bight of Eleuthera.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

A men’s restroom became a sandwich shop.

This peaceful Massachusetts graveyard was one of the first "garden-style" cemeteries in America.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

Books you don’t need in a place you can’t find.

A centuries-old church stands as a testament to Boston's "father of architecture."

This lakeside tower is the third attempt at getting a tourist destination to stick on the spot.

The ceiling of this vintage movie palace is covered in fantastic Art Deco murals.

The Atlantis of Cape Cod reemerges during the lowest of tides.