The celebrated eyesore created by starry-eyed sweethearts.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

A layered tribute to the work of mosaicist Isaiah Zagar.

The first American department store, and home to the largest operating musical instrument in the world.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.