The first major renovation under the Saudi kings was done between 1955 and 1973. In this renovation, four more minarets were added, the ceiling was refurnished, and the floor was replaced with artificial stone and marble. The second Saudi renovations under King Fahd, added a new wing and an outdoor prayer area to the mosque. The new wing, which is also for prayers, is reached through the King Fahd Gate. This extension was performed between 1982 and 1988. 1988 to 2005 saw the building of more minarets, this extension also added 18 more gates, three domes corresponding in position to each gate and the installation of nearly 500 marble columns. Other modern developments added heated floors, air conditioning, escalators and a drainage system. In 2008, the Saudi government under King Abdullah Ibn Abdulaziz announced an expansion of the mosque, involving the expropriation of land to the north and northwest of the mosque covering 300,000 square meters. At that time, the mosque covered an area of 356,800 square meters including indoor and outdoor praying spaces. 40 billion riyals was allocated for the expansion project. In August 2011, the government under King Abdullah announced further details of the expansion. It would cover an area of 400,000 square meters and accommodate 1.2 million worshippers, including a multi-level extension on the north side of the complex, new stairways and tunnels, a gate named after King Abdullah, and two minarets, bringing the total number of minarets to eleven. The circumambulation areas (Mataf) around the Kaaba would be expanded and all closed spaces receive air conditioning. After completion, it would raise the mosque’s capacity from 770,000 to over 2.5 million worshippers.