Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

Every week, a festive public jam session breaks out in downtown Asheville.

A museum dedicated to the legacy of Bob Moog and his pioneering synthesizers.

An early life spent in this "Old Kentucky Home" inspired the writings of North Carolina's most famous novelist.

An ode to one of the dirtiest jobs during the construction of the Boulder Dam.

A circle of giant painted vases in the former pottery capital of the United States.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

An office built to look like a giant basket.

A blacklight mini-golf fever dream pays tribute to the iconic rock band.

The aggressively banal name of this underground fortress of bureaucracy does little to evoke its truly surreal existence.

The Paul Bunyan of the steel industry.

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

This Art Deco service station has been providing tune-ups and turning heads for close to a century.

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

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

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

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

A popular swimming hole that hides one of America's most deadly diving spots.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

The oldest house in Galena, Illinois, now is a reminder of when this city was the world's lead mining capital.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

A dazzling display of lights and crystals.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.