This former stomping grounds of the most eminent astronomers of the early 20th century.

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

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

A walk through the historic city center, under the streets of Seattle.

A house built from trash known as the poor man's Hearst Castle.

The rocks in this arid basin leave trails of movement behind them.

Explore 10 acres of environmental sculptures.

America's most famous piece of self-built architecture.

Hundreds of trees made from glass bottles make up this forest on Route 66.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

An eccentric folk art landmark made out of discarded bottles by an inspired "grandma."

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.