The historic bar where local ship captains, traders, and gold miners would come together to do business a century ago.

This historic building provides a powerful glimpse into the lives of Japanese Americans forced to relocate during World War II.

The first park built over a freeway is a brutalist masterwork.

Santa Monica's oldest restaurant, decorated with set pieces from the Mutiny on the Bounty.

A treasure hunter's tiny bar, harboring celebrities since 1959.

An increasingly eccentric apartment building, topped with winged beasties.

A multimedia experience that chronicles the atrocities of racism.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.

A castle that was built stone by stone by an eccentric journalist.

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

America's most famous piece of self-built architecture.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

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

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Eighty million natural history specimens call this gargantuan museum home.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.