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

As a show of peace, a Japanese naval pilot gifted his 400-year-old Samurai sword to the Oregon town he bombed.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

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

Local history museum with mammoth bones and an old myth about local giants

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

A giant roadside black bird marks the location of this eclectic local mall.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

Birdhouses, peacocks, animal sculptures, and a graveyard are all found along this eclectic nature trail.

The highest point in Washington state is a volcano covered in glaciers.

A Roman-style column in Oregon hides a spiral staircase inside.

Nuclear reactor created the plutonium used on Nagasaki.

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

The world's largest egg has been cracked a number of times over the years but has been repeatedly replaced.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

The Wonder Road aka Doobie Lane, a mile-long strip of dirt road filled with folk art.

A massive sea stack famous for its appearance in The Goonies.

Legend says that these tall basalt pillars are the petrified wives of a trickster god.

Perhaps the world's only gas station inspired by a political scandal.

In Washington's Yakima Valley lies a town "where dinosaurs roam."

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

Mountain known by the Tillamook Tribe as "the place of the supreme deity."

This scenic gorge is named after one of the most famous Bigfoot attacks in pseudohistory.

A stunning landscape of bunkers that once stored chemical weapons.