A giant Troll lurks under one of Seattle's oldest bridges.

A community gathering place that once housed half-ton tanks and the World's Fair.

Bonsai trees that are up to a thousand years old.

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

Ruined pieces of stone and a swimming pool are all that remain of an amusement park swept away by a flood.

This hidden jockey “walk of fame” celebrates the winning riders of the Kentucky Derby.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

What's that on the side of that building? Va Va Voom, it's Bettie!

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

A wall of chewing gum moonlights as collective art.

This former coal gasification plant found a curious second life as a popular public park.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

This giant meditative chakra sits peacefully in the Flathead Valley of western Montana.

An outsider art duo's yard has been turned into a whimsical public gallery.

"Enter and be entertained or annoyed by Dada in Walla Walla."

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

A museum dedicated to the history and exploration of both popular music and science fiction.

This playground sculpture of an icon from the past is dedicated to the children of the future.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

The haunting ruins of Jack London's dream house.

A hidden world of exotic succulents and cacti.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.