In Edwin Hubble's hometown, a scale model of the groundbreaking telescope that was named in his honor.

This shrine commemorates the site of the first known Catholic mass in the United States.

Giant papier mache hog sits on private property.

How Quincy, Florida became the richest town per capita due to one man's shrewd business acumen and taste for fizzy drinks.

The iconic remains of the original Academic Hall that burned down in 1892.

This majestic tree has survived 400 years of storms, droughts, and floods, and is a beloved natural landmark in Missouri.

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 is expected to be 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.