Hello,
There are two gazebo areas where white colored wood used. Over these woods, you can put glass panel or fabric so that it can be used for rainy days or hot weathers too. There are also white stones which are harmonious with the white gazebos. The stones are beside walls and other ground areas covered by "Thermowood Deck". Thermowood deck is a good material for terraces and balconies. It makes places more comfortable and warm place beside it has insulation. There are many kinds of wood to use as thermowood deck. So you can find cheaper deck flooring as well.
In general, the terrace is designed to be comfortable and a warm place beside it has a modern apperance.