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

There’s a hidden military meme engraved on the World War II Memorial.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

Home to items never before seen by the public.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

More than five miles of underground passageways.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

There's something big lurking beneath the surface of this tiny Oregon park.

A vertically floating hemlock controls the waves and weather at Crater Lake.

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

A sculpture of a salmon swimming through a brick building.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.

An emporium for the weird, creepy, rare, and just plain gross.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A beautiful 62-acre Catholic shrine and botanical garden.

On the Oregon coast there is a natural hole that seems to be draining the sea.

A collection of huge Pre-Colombian structures in Alabama.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

A whimsical sensor instrument for Minneapolitans to play on their walks to work.