This egg-shaped treehouse was inspired by "sport sleeping."

An obscure waterfall that looks like something out of a fantasy novel.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

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

From mining complex to industrial exhibition, this museum once played a major part in the X-Files.

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

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Hunting trophies decorate Oregon's most unique bar-restaurant.

A hiking area billed as a possible home to Bigfoot.

An extraordinary mixture of natural beauty and man-made phenomena.

While these wooden totems bear a striking resemblance to First Nations artwork of British Columbia, their actual origins lay on the opposite side of the Pacific Ocean.

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

Historic psychiatric asylum and most-filmed location in the Great White North.

Delightful disarray of found objects and clutter.

A beautiful 62-acre Catholic shrine and botanical garden.

A tiny plaque hidden miles into the Washington wilderness is all that remains to honor a shipwreck that left 18 people dead.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

The founder of a utopian religious community based on the Golden Rule laid his son to rest on this grassy hill.

Rustic natural hot springs in the deciduous rain forest.

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

The remains of a former logging boom town, crumbled away in the forest.

A short hike into the mountainside forest reveals a decaying 1890s town.