A flat slab of stone perched hundreds of feet above the Gasconade River in the northern Ozark mountains.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

An extravagant western hotel where every floor is the "ground floor."

This restaurant serves wood-fired fare served in a natural cave with a live spring.

Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Perhaps the most spectacular grotto along the Algarve coastline.

Single runway interrupted by a busy road that cuts across its middle.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

Pilgrimage site for star-crossed lovers.

During the 19th-century, this park was a vital trading fort.

The eccentric and colorful pavilions of Tower Grove park are a beloved and overlooked symbol. 

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.