Massive crater in central Oregon.

Only known mainland rookery of the threatened Stellar sea lion.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

A wall of chewing gum moonlights as collective art.

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

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

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

Museum preserving torture methods from the past.

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

A heavenly experience, right here on Terra Firma.

Inside a humble hangar is some of the best roller derby the world has to offer.

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

Tiny horses tethered to antique rings are scattered around the city.

Portlandia is the second-largest copper repoussé statue in the United States.

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

10,000 flowered plants bloom in the City of Roses.

This sandstone mansion was the home of two of Oregon's most important pioneers.

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

The world's tallest statue of an American hero.

Resting place of the Texas A&M canine mascots, who watch the game from the grave with their own miniature scoreboard.

Decades of discarded bottle caps line this alleyway, a fixture of Texas A&M.

Campus tradition says couples who walk beneath this enormous oak will stay together forever.

This collection of bronze hands comes from astronauts, presidents, baseball greats, and more.

A "Texanic" (gigantic Texas) collection of Art Deco architecture at Dallas' historic Fair Park.