The second tallest railway trestle bridge in America.

Former farm staffed by mental patients is now a public park.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

A sacred lake composed of over 300 separate pools of highly concentrated minerals.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

Site of the greatest known waterfall that ever existed.

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

A cave interior in the shape of the ancient rhinoceros, created by lava cooling around its carcass.

Train debris from the deadliest avalanche in United States history can still be found in the ravine where so many perished.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.