Eugenia House is a unique versatile residence project by Joao Diniz. The so-called primitive or elementary cottage is built on the sloping site of 1650 sq meters, but the building itself occupies only 86 sq. meters. To make construction more affordable and open view to the river the house has single slope curved roof supported by metal pipes from the old sewage systems. The roof at the same time is a back wall. The interior of this compact home is very well planned and features a big living room with kitchen on the first floor and a cozy bedroom on the second. Sloping ceiling focuses and connects the interior to the beauty of surrounding groves. The exterior is decorated with unique lace reminding of African tribes – this little twist completes the house.