The security building Plot 1 is one from a group of four buildings  that are considered part of the Fourth Expansion of the Holly Mosque located in Shamiya area in the Holly Mecca, Saudi Arabia with a total built up area of around 220,000 m2, and it is comprising of three towers over one common podium.
The podium consists of basement and 5 floors, with area of 17,100 m² per each floor. Each tower has 16 floors, with area of 2380 m² per each floor per tower.