Diriyah palace

This royal residence which belongs to the current king of Saudi Arabia spans an area of 27.5 km which as about 26443 acres or 10577 hectares. It contains a mosque, mini stable, large farms in which vegetables and fruits are grown for daily consumption. It also has its own sewage treatment system. It is directly connected to the King Khaled International airports royal Hanger. As you can see there are many pools and 2 Helipads.