A tribute to the Nirvana frontman hides beneath the bridge that was the singer's beloved hangout spot.

Every summer West Seattle experiences a housing bloom.

This unique Seattle structure was designed to be the greenest commercial building on the planet.

A fine, large-aperture telescope available for public use.

Browse through roughly 130,000 titles in the world's largest independent video rental store.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

The highest point in Washington state is a volcano covered in glaciers.

The first park built over a freeway is a brutalist masterwork.

A wall of chewing gum moonlights as collective art.

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

This large maar crater in Oregon is the bigger brother to Hole in the Ground.

A sculpture of a salmon swimming through a brick building.

Forever immortalized in concrete, this Simpsons etching was crafted by show creator Matt Groening.

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

The largest wooden building in the world now houses a fascinating collection of aircraft.

A sprawling cave network created by a lone lava tube.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

The world's last remaining store of its kind.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

A Roman-style column in Oregon hides a spiral staircase inside.

This public art piece proves that in Portland even reporting the weather is a thing of whimsy.

Instead of fruit, the branches of this tree are brimming with hopes and dreams.

Where Nor'easters go to die.

A volcanic landmark located on an Ice age lake bed.