This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

This shop and studio is dedicated to the art of the book, from letterpress to bookbinding.

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

An essential stop before plundering, BYO Cutlass.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

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

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

This shop specializes in oddities and Victorian-inspired wonders.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

An artsy hidden staircase leads to breathtaking views of San Francisco.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

San Diego's most historic and haunted home.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

An inconspicuous suburban street corner is the site of San Diego's worst air disaster.

It would be a crime to miss it.

Famously misunderstood wonder of the ancient world

The world’s first museum dedicated to the history of childhood opened in Edinburgh in 1955.

There's an exclusive Beefeaters pub hidden in the Tower of London.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This one has sailed five times as far as Sir Francis Drake's famous ship.