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

San Francisco's newly reopened hands-on science museum.

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

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Home to items never before seen by the public.

Venice's "Island of the Mad."

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

The celebrated eyesore created by starry-eyed sweethearts.

This floating cinema brings new meaning to the phrase "going out" to the movies.

A museum dedicated to the alleged Roswell Incident.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

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

A hands-off space for graffiti artists to hone and display their skills.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A beautiful geyser under environmental threat.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This shop specializes in oddities and Victorian-inspired wonders.

The site of the climactic scene from the classic horror film is now a historic landmark.

Pompeii's less famous neighbor is still revealing her secrets.

The remains of diamond fever taken over by the desert.

These azure waters were thought to lead to the Mayan Underworld.

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

A battle between nature and architecture in the Cambodian jungle.