While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

Two massive rock outcroppings on the Oregon coastline.

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

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.

This Oregon farm is dedicated to teaching people the professional art of tree climbing.

The wooden airship was the largest flying boat ever built.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

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

A memorial for the mustachioed record-setting runner.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

This nature center has one of the largest collections of native raptors in the Pacific Northwest.

Journey through a bit of nostalgia inside this classic record and video store.

There's something big lurking beneath the surface of this tiny Oregon park.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

Double spiral staircases are not unheard of, but they are very rare.

Climb to the top of this spiritual tower, and you'll be rewarded with spectacular views.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

The sophisticated hydraulic system of the Nazca civilization.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This fantastical house shaped like a seashell brings aquatic design to architecture.

A corkscrew-shaped barn in Ireland.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

A spiral staircase twists to the top of this unusual Czech lookout tower.