This elaborate towering structure was once famed for its revolutionary height.

Resting place of Hollywood's immortals is also site of summer film screenings.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Medicinal spa created with the discharge from a geothermal energy plant.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Yo, Adrian!

A beautiful geyser under environmental threat.

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

The first declared National Monument in the United States.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The site of Paul Revere's historic two lantern warning.

At 207 feet, one of the world's longest continuous escalators.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

The second oldest continuously operating bar in Louisiana.