The first AIDS memorial chapel in San Francisco and one of only a few in the U.S.

A tourist attraction founded around a slumping cabin.

This 19th-century church is now a popular roller rink.

A modern mechanical planetary system, part of a 10,000 year clock.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

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

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

The only theatre in the world constructed specifically for sound movement.

The remains of a deserted steamboat sit rusting beside an old ferry pier and an abandoned train platform.

A permanent exhibition honors Queen, which recorded seven albums at the casino-based studio, including “Under Pressure” with David Bowie.

This statue pays tribute to the iconic musician in the place where he recorded his final studio album.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

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

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

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

This monument is a stark reminder of the horrors of the Zanzibar slave trade.

Freddie Mercury's childhood home is now a monument to the iconic Queen rockstar.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Crushed coral and crystals give the sand its signature coloration.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.