Providing the soundtrack to the golden years of the Seattle grunge scene.

If you don't look closely, you might mistake this sculpture for just another passenger waiting at the airport.

Florida castle built with aluminum printing plates.

This volcano rises like a giant anthill from the plains below, with a road spiraling up to the rim.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

An exquisite grouping of structures made from 10 tons of invasive saplings.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

The "lovely red Vega" of the legendary record-settling pilot.

An overlooked memorial honoring the local Washington residents who died in World War I.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

The most decorated dog of World War I is preserved in the Smithsonian.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The site of the climactic scene from the classic horror film is now a historic landmark.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

Largest Roman Catholic church in North America.

Look closely and you’ll notice that the color changes a third of the way up the tower.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Home to items never before seen by the public.

Tacoma’s 25-foot coffee pot music spot has served up over 80 years of concrete kitsch.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

A community gathering place that once housed half-ton tanks and the World's Fair.

A museum dedicated to the history and exploration of both popular music and science fiction.