A green roof, or 'living roof' really helps regulate the temperature of a house or building, keeping it cooler in the summer and warmer in the winter. You can even graze your goats on them! Indeed: goats can climb ladders, they are quite agile!
A small traditionally-styled Scottish house by modular builder The Wee House Company. This model has one bedroom in 431 sq ft. No upstairs, but definitely an idea if I can never quite afford an architect to design something specifically for me.