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

The silly symbol for an underground protest group is now scattered around the city.

A striking public sculpture representing the period of martial law in Communist Poland.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

This seemingly random 30-foot statue of an oryx in Qatar's capital was a mascot for the 2006 Asian Games.

Baroque celebration of the end of the Great Plague of Vienna.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

World's largest collection of serial killer artwork and other macabre exhibits.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Walk in the footsteps of the gods and straddle two tectonic plates.

The only pollutant in the clear blue water is sunscreen.

Three-story concrete ram with a permanent gift shop.

One of the first big sculptures anywhere in Australia.

Final resting place for hundreds of prisoners of war.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Northern Ireland's Brobdingnagian stepping stones.

A museum marks and documents the site of the Titanic's launch.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.