Modern technology and live displays tell the story of the Pacific during WWII for the Internet generation.

This small park features a monumental fountain wall, providing a great photo opportunity in the middle of Houston.

A curious statue fit for a mad tea party.

The largest underground pedestrian tunnel system in the U.S. mostly caters to the people working in the offices above, but provides a great, air-conditioned way to traverse the city.

Scattered around Atlanta are little doors with big charm.

Constructed from bricks salvaged from a former dormitory destroyed in a fire.

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

Ancient snack bar of the Roman Empire re-opened.

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

The walls and streets of the ancient city are peppered with penises.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

This clifftop arch is a natural stunner.

The glowing blue Nymphaeum of Emperor Tiberius.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

This colorful statue welcomes visitors to a Barcelona park.

The unexpectedly beloved remnants of a controversial thermal power plant.

An early 20th-century bullring converted into a modern shopping center.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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

A beautiful but toxic fountain of mercury.

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