The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

Hollowed out cedar log tubs set in an ancient towering forest.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A treehouse assailed by the elements and the government, now gone.

A town honors its legacy of traditional American Indian pipe carving with one gigantic pipe.

The basement bowling alley of this St. Paul dive bar is decorated with thousands of dollar bills.

This ambitious attraction was the brain child of a lake resort impresario, and built by the WPA.

The fungus-shaped vintage gas station has served multiple purposes over its lifetime, and now serves ice cream.

America's largest viking stands in a Minnesota city that believes it was visited by the ancient nords.

A fence constructed completely of skis on Monroe Street.

A Norwegian church that was built before Wisconsin was even a state has been entirely moved to a nicer spot.

Minnesota's highest point is a scenic vista marked by a plaque and armies of mosquitoes.

Duluth mineral magnates built this charming art deco lodge to be their private clubhouse.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

Elaborate drama imparts an appreciation for 19th century hardships.

This taxidermic smorgasbord was co-created by an artist poached from the Museum of Natural History.

A stone face watches over the river.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

The only arched bridge made of stone on the entire Mississippi River.

This secret gem of a toy store houses a rideable carousel populated with fantasy animals.

This massive roadside mascot was the first version of the giant to illustrate his butt.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...