The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Rushing water plunges over a 100-foot drop created by an ancient lava flow at this majestic waterfall.

The world's last remaining store of its kind.

This natural marble cave is one of only five national monuments in Oregon.

Where Nor'easters go to die.

Formerly secret, precariously perched boulders.

This stoic, if derpy, giant stands as a monument to Oregon's statehood and the novelty culture of yesteryear.

The longest continuous lava tube in Oregon.

Only known mainland rookery of the threatened Stellar sea lion.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

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

This charmingly homemade amusement park has been growing for 40 years.

The magic's in the hole!

This frequently-photographed waterfall takes only a short hike to visit.

A larger-than-life monument to the overlooked women who braved Western expansion and broke down societal barriers.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

No matter what the plaque under this massive legume says, this is not the world's largest peanut.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

These massive mitts are made of 30 tons of devotional bronze.