A 50-year-old pre-fab house designed by Jean Prouvé for French colonials in Africa is currently residing in the front garden of Tate Modern. The building, a sheet steel prototype, is one of only three built between 1949 and 1951. It was recovered from the Tropics, dismantled, restored to near mint condition and bought by American hotelier Andre Balazs. Shipped into London last month, it is about to be officially unveiled. Watch the video here to see it being built.