The London statue that imitates passersby.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Its collection includes a broad array of social, geographic, graphic design, and political history.

The television series' iconic giant foot was borrowed from this classical painting.

A mysterious shape catches the eye in this 16th-century painting.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

Anyone can control this glittery light installation with just a phone call.

Historical trolley restoration and operation at History San Jose, Kelly Park.

It took years to decode its mysterious messages.

It is locally loved and ridiculed for literally looking like poop.

The world's largest piece of copyrighted artwork.

Fake subway tiles were installed to cover a design that resembled the Confederate flag—it's unclear if the resemblance was intentional.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

Stunningly detailed mosaics in a New York subway station bring life to the Weimaraners of artist William Wegman's work—and to thousands of commutes.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

A massive collection of petroglyphs dating back some 40,000 years.

Macabre astrological automaton clock dating to the late 1400s.

Legend says this sacred tree was a gift from goddess Athena.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

In the 19th century, this was the center of Boston's Black community.

No one messes with the Massachusetts sacred cod, not this time...

This landmark cemetery in Boston was created more than 300 years ago.

Narrowest house in Boston.

A centuries-old church stands as a testament to Boston's "father of architecture."