Fittingly, America's museum of architecture is itself a magnificently designed old building.

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

A much-maligned monument to teetotalism.

Go take a picture with the inventor of the daguerreotype photographic process.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

A historic arena where the Beatles played their first concert in the U.S.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A derelict bit of transportation infrastructure hidden in the woods.

A wondrous old library overlooking the nation's capital.

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

The abandoned husk of a mental institution that failed to save a Jazz Age icon still sits nearly unchanged.

Sniff the Titan Arum's rotting flesh.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

A decommissioned military complex that's now a modern industrial park.

Art museum based around the collections accumulated over 58 years by one eccentric thrift store owner.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

This Transylvania County city is home to a rare white squirrel population that is descended from an escaped carnival animal.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.