The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This bridge was constructed from the rubble of the infamous Bastille.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This water tower slanted at an uncomfortable angle off the old Route 66 was an ingenious marketing ploy.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

A giant chess set, minus the psychedelic drug trip.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

A shape-shifting buy-sell-trade bookstore, born to Beatnik Era spirit.

A massive ultra-modern church presents a science-fiction view of Catholicism's inclusive future.

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

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

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

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

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

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

Furniture tries to escape an abandoned building in San Francisco.

Only hotel where you can legally launder money.

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