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

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

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

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

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

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

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

This grand gothic brewery has been pumping out suds for over a hundred years.

A sweet symbol marks the place where torturous executions were once carried out.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

At 207 feet, one of the world's longest continuous escalators.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

A much-maligned monument to teetotalism.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

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

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A six-ton wedding present for the King of the Scots.

The most loyal of little dogs, or a Victorian era publicity stunt?

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.