This public art piece proves that in Portland even reporting the weather is a thing of whimsy.

A sculpture of a salmon swimming through a brick building.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

This poor little statue is the most vandalized memorial in Washington.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

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

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

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

The only tennis court that falls under the jurisdiction of the central bank.

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

A line of blue paint marks the route of the inaugural parade.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

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

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

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

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

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

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

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.

It was once the base for a series of domestic terror attacks.

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

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

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.