A brick-paved former section of the historic coast-to-coast highway.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

An experimental, automotive replica of Stonehenge.

This erect, phallic geological spire wasn't always named so domestically.

The second tallest railway trestle bridge in America.

The decorations were inspired by an unlikely missing treasure.

Its 27 graveyards represent the many nationalities and ethnic groups that voyaged to this wilderness in the late 19th century.

A magical sanctuary of mythological statuary.

This 22-acre botanical garden is home to the largest collection of rhododendrons in the world.

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

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

Mysterious ancient petroglyphs carved on a glacial boulder at the tip of Bainbridge Island.

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

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

This grove of ghostly cedars was killed in 1700 by an enormous tsunami, felt from the United States to Japan.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

This monument remembers the first Japanese Americans forcibly relocated during World War II.

The century-old remains of an abandoned farm town in eastern Washington.

A nearly abandoned 19th-century town on the Palouse.

This bridge provides safe passage for squirrels.

Four abandoned towers hidden above the Douglas fir forest in Washington.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

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

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.