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

The remains of a Canadian train crash are now mouldering beneath layers of rust and graffiti.

The mountaintop wind turbine boasts a viewing deck — and a fair share of controversy.

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

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.

Old submarine parts have been converted into faux whale fins.

A giant Troll lurks under one of Seattle's oldest bridges.

A colorful architectural gem in Seattle's uniquely modern Central Library.

Couple's personal collection of pinball machines turned public pinball museum.

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

This historic steamboat is scuttled just a few hundred feet from where it was built over a hundred years ago.

Treehouse motel and treehouse-building school.

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

Tens of thousands of tiny birds swarm into one school chimney every fall.

The seamy, underground secrets of Portland's criminal past.

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

A tourist attraction founded around a slumping cabin.

This abandoned motel doesn't welcome guests anymore, but decay and a creepy atmosphere still call it home.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

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

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