Live long and prosper in Tennessee.

A bizarre roadside attraction and the first instance of miniature golf in the world.

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

This historic train station has been converted to a locomotive themed hotel.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

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

A toweringly silly piece of modern art has been delighting locals since the 1980s.

A Perpetually Under construction Park.

This large midwestern cavern features impressive rock formations and an underground waterfall.

This massive roadside mascot was the first version of the giant to illustrate his butt.

This secret gem of a toy store houses a rideable carousel populated with fantasy animals.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

Boise State's stadium was the first non-green football field in the world.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

Jail from the 19th century that was built by inmates.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

A walk through the historic city center, under the streets of Seattle.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.