True to their reputation, the Dutch have pioneered boatloads of eco-initiatives like this extraordinary home built from billboards and umbrellas. In the case of this water tower home, all of the materials were recycled, with not one beautiful red brick lost. A serpentine staircase connects each of the floors (giving the building’s residents a healthy jolt of exercise too.) Long a symbol of unity, the circular shape provides a sense of connectedness.
A new three-level high window provides natural lighting to overcome the building’s major design challenge — only tiny windows existed previously. Finally, the top-floor terrace adds a final svelte touch to an already stunning renovation.