How to hold your house cool within the summer? I have a conservatory project that tells us to design a...

I have a conservatory project that tells us to design a "cool house" that will stay cool minus air conditioning.. Any innovative planning would be apreciated

Thanks in finance
Answers:    Plant tall shade trees 20 or 30 foot from the south and west sides of the house. Have deep porches on the south and west. Tile or marble floors and walls (that's what they do within Mediterranean countries).
reflective mirrors on the roof, they can reflect the sunlight vertebrae in the sky, insted of allowing it to warmness up your house..