In the long history of human construction, almost every type of material imaginable has been used to build things. After all, you only need to find something that will hold its shape and support weight to make a building with it. The Romans would often embed empty vases into concrete to both reduce the weight of taller portions of structures as well as to take up space and use less concrete. But imagine building an entire house, village, or city out of bottles: crazy, right? To Alfred Heineken, this idea had the potential to change the world. Enter the Heinekin WOBO.