From Islands to hotels and treehouses , ideal homes from waste materials . Beer cans , hubcaps and window frames provide much of the raw material for four separate buildings , with four floors in the largest . Westminster Cathedral built single - handed from scrap over 50 years by neo - Nazis . New York City dumpsters built for homeless people . British homes built on thousands of toothbrushes and brushes .
From Islands to hotels and treehouses , ideal homes from waste materials . Westminster Cathedral built single - handed from scrap over 50 years by neo - Nazis . New York City dumpsters built for homeless people . British homes built on thousands of toothbrushes and brushes .