One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A layered tribute to the work of mosaicist Isaiah Zagar.

World's first "penitentiary," meant to be humane, drove men insane.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

A wall of chewing gum moonlights as collective art.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

Rustic natural hot springs in the deciduous rain forest.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

America's oldest archaeological site or a muddled case of wishful thinking.