There are many things that make a building green, and TreeHugger often complains that where one builds and how you get there is as important as what you build. That's why I have long been intrigued by the Cykelhuset Oboy! in Malmö, Sweden, and why I took a train over the famous bridge from Copenhagen to visit.
It is only a fifteen minute walk from the Central Train Station, and it's a multi-family building built around bicycles being the prime mode of transportation. Oh, and it's built to the tough Passivhaus (Passive House) standard.