das Parkhotel (Drain Pipe Hotel)Austria Made from recycled drain pipes. There is actually no set fee to say in the Drain Pipe Hotel, you pay what you can and that is enough for them. (What a super idea).
A pair of glass panels, weighing almost four tonnes and spanning two storeys in height, pivot out towards the garden of this renovated Antwerp home. The twin panels – described by Belgian studio Sculp IT as "the world's largest pivoting window" – form.