One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

The palatial McDonald's that inspired Wesley Willis.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

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.

The tunnel under the Capitol Building where Congress takes out its trash.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

An overlooked memorial honoring the local Washington residents who died in World War I.

Every drop of D.C. tap water flows through this old waterworks.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

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

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

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

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

The biggest solar telescope in the world helps reveal the secrets of our sun.