Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

The California capital city once stood 10 feet lower than it does today.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

A daily replay of the experiment that proved the rotation of the Earth.

This beloved marketplace mascot poops money and grants good luck.

This elaborate towering structure was once famed for its revolutionary height.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

Greenery cloaks this serene sculpture inspired by the famous Lost Gardens of Heligan.

The narrowest street in Canada was once a spot for dastardly doings, now a historic piece of Chinatown.

This historic Victorian hotel has a scandalous history of affairs and murder.

A colorful hidden village of the fair folk.

Made of granite, this is a symbol of the Inuit peoples near water that expresses abundance.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

This quirky piece of naval artillery has been deafening Canadians for over a century.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Craft liquors concocted in an old Seattle warehouse.

From a neon Rapunzel to a bike traffic meter to a street fair color scheme, the most opened drawbridge in the US is a veritable art gallery.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

This working class sculpture pounds his hammer all the livelong day.

A wall of chewing gum moonlights as collective art.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.