This demon atop the Notre-Dame de Paris looks utterly bored.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

A classically inspired temple in Redwood City.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Brussels' favorite peeing boy has a sister.

Meet the bronze beloved pet to a family of famous peeing statues.

Cozy basement bar sports an inventory of over 2,000 beers.

Climb inside an iron crystal magnified 165 billion times its normal size.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

A little sculpture with a large wardrobe.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

From the Difference Engine to the Cray-1, all under one roof.

A shining, cold, black organ lies in San Francisco's financial district.

The taxidermied remains of the "last wild grizzly bear in California" and of the symbol of the state of California.

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

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

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

California's own majestic geyser is powered by a subterranean volcano.

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

The fossilized remains of ancient California redwoods.

A tribute to the life and work of the beloved "Peanuts" cartoonist.