Protected from the elements, these Native American rock paintings have survived approximately 250 years.

Local legend has it that an old, decaying staircase outside this cemetery is haunted by dozens of ghosts.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

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

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

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

The decorations were inspired by an unlikely missing treasure.

A giant milk bottle from the 1930s beckons drivers to this diner.

Every drop of water in this 27-mile long reservoir was pumped up from the Columbia River using power from Grand Coulee Dam.

Sleep beneath the big screen at this old-school movie theater.

Bird dung painted this huge boulder which in turn inspired the name of a city.

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

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

The cardinal directions, set in stone.

An electrifying collection of gadgets and literature from the 16th through 20th centuries.