Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

Mysterious installations bring levity and light to a sometimes stodgy city.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

The early data processor factory founded in Washington for the 1890 U.S. Census went on to become IBM.

The fountains of the U.S. Navy Memorial are annually salted with water from the Seven Seas as part of a nautical ritual.

The world's oldest soul food restaurant is also one of its best.

There's a crumbling old mansion inside the Smithsonian National Zoo.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

The house where the writer spent his formative years.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

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

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

The span is crooked and made from two older recycled bridges.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

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

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

This beautiful site is where the first transatlantic telegraph was sent from.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.