This single room has survived the centuries with almost no deterioration.

Ozymandias’ time-keeping temple.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Eighty million natural history specimens call this gargantuan museum home.

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

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

Giant, friendly pelicans in Central London, the most unlikely of places.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

One part local history, 99 parts gruesome haunted house.

Mosaics, storks, and brothels—this ancient city has it all.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The largest known Ancient Egyptian obelisk.

A giant Australian fruit and tropical farm.

Final resting place for hundreds of prisoners of war.

A self-funded cemetery with a long list of inhabitants.

This historic observatory contains the world's oldest refracting lens telescope.

Elevated freight railway turned wildly successful urban park.

More gold than anywhere else, ever.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

A battle between nature and architecture in the Cambodian jungle.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Peace Park and the Atomic Bomb Dome.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.