This chapel is the site of a yearly pilgrimage that originated during the Middle Ages.

The ancient sauropod tracks found in this former quarry are some of the largest in the world.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

Perhaps the most spectacular grotto along the Algarve coastline.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

The beauty and the beast of hydraulic mining is on full display at this California Historic State Park.

An enormous image of Utah's salt flats made entirely from tape.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

35,000 grape hyacinths flow like water down a garden hill.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

A museum dedicated to the quirky and colorful world created by Springfield's favorite son.

The development of this cliffside waterpark is representative of Mexico's history of co-op tourism developments.

The famous artist couple lived and worked here, in two different houses separated by a bridge.

66,000 pieces of art, donated by one of the world's richest men.

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

On top of a sheet metal business in Juneau stand nearly a dozen charming Wizard of Oz statues.

A rare kind of blue bear can be found chiefly in the national park that shares their name.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

Massive mounds of golden sand look like a desert landscape randomly plopped in an Arctic forest.

Colorful boxes placed over the dead are left to rot and crumble.