"Blue House, a Grade I historic building, has stood the test of time. The name is a bit of a misnomer: It's not just one house, but a cluster of four interconnected tenement-style residences and shophouses in a rainbow of shades—blue, orange, yellow, and gray. The Blue House is the most famous, thanks in part to its head-turning cobalt facade, and has played host to all kinds of businesses—a hospital, temple, and even a kung fu studio. It currently serves as a residence for local Hongkongers and a few businesses." - Kate Springer