This amazing upside-down house clinging to a hillside near Sao Paulo in Brazil is called the Residencia Olga. It was designed by Marcos Acayaba. You enter the house at the top level, where the daytime living areas are situated. The level below that contains bedrooms and bathrooms, while the bottom levels have guest bedrooms. This picture was done very quickly in Adobe Photoshop, I tried to do it all on one layer and worked very quickly as I didnt want it to have too much of a “worked up” feel to it. I just wanted it to look like a rough sketch. I am very pleased with the result.