A Manhattan office building is home to the world's largest chess board.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This doorless 20th-century elevator doesn't stop or slow down.

A spherical "micro-nation" in the heart of Vienna.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A tongue-in-cheek arcade where the games are based on everyday life.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

Countless grotesque faces stare out from this eerie Prague art wall.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Handsomely crafted representations of our round planet.

Museum devoted to the artificial language of Esperanto.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Legends surround an ancient tree trunk riddled with nails for good luck.

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

The house that took a plunge into the facade of a museum.

The beautiful baroque library of the Hapsburg empire.