Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

Order cookies baked by cloistered nuns in a 400-year-old monastery.

A lush indoor jungle fills this bustling Madrid transportation hub.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

This cemetery features modernist statues as strange as its name.

This work of engineering is imbued with elegance and ingeniousness.

The Lowcountry color with the power to stop evil from entering a home.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

One of the oldest living oak trees in the Southeast.

The "last unrestored grand mansion of Savannah" is now a cramped, mouldering maze of antiques.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

For decades, the parade of apostles that left the Expiatory Temple of Guadalajara remained hidden inside one of the towers.

A beautiful and controversial modern sculpture that alludes to the Aztec past identity of the Virgin of Guadalupe and the phenomenon of syncretism.

This structure was moved nearly 40 feet while people continued working inside it.

One of the oldest hospitals in the Americas is now decorated in hallucinatory murals.

History is on display in this hall, which has served as the seat of city government for centuries.

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

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

These floating gardens show what Mexico City used to look during the Aztec Empire.

A hotel masquerading as a medieval castle overlooks a Mexican city.

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

Colonial architecture meets urban art in this sprawling open-air gallery.

Meat and seafood are part of the frozen dessert flavors available at these legendary street stands.