Passengers going from one terminal to another at King Khalid International Airport can utilize moving sidewalks for transportation. The moving walkways, the first to be installed at any Saudi airport, are located in the three link buildings that connect the international and domestic terminals. There is a total of of the walkways, which are actually wide conveyor belts which operate at floor level and move at a speed of close to . Additional passenger conveniences in the terminal complex include 80 elevators and escalators. In the parking garages, 16 escalators are provided, and two serve the mosque. The elevators, escalators and moving walkways all have the latest safety equipment installed. Should a fire occur, the elevators would automatically be recalled to the main floors and the doors opened. The escalators and moving sidewalks are equipped with fire and smoke detectors which will cause them to stop automatically should a fire be detected. KKIA was the first airport in the Kingdom to install airbridges, to speed up handling and turnaround times. Each terminal has eight gates with airbridges effectively eliminating the need for bus journeys between the terminal buildings and waiting aircraft. The design of KKIA Mosque is one of the most distinct landmarks in the airport by virtue of its Islamic architecture. It can accommodate 5,000 worshipers inside and another 5,000 in the plaza outside. Its location in the center of the passenger terminal establishes it as the most important structure on the airport and makes it the first sight visitors see as they leave the arrival area. The dome is in diameter and internally clad in polished bronze, and towers above the arrivals level roadway, higher than all of the other structures in the passenger complex with the exception of the control tower and minaret. In 1982, through the Vesti Corporation, the British architectural artist Brian Clarke was commissioned to design and fabricate stained glass for the interior of the Royal Mosque. Clarke studied Islamic ornament at the Quran schools in Fez and Tangiers for six weeks. The Royal Mosque, completed in 1982 and containing 2,000 square metres of stained glass, was considered to be the largest and technically most advanced stained glass project of the modern period, requiring the full staff of 4 stained glass factories and 150 craftsmen, taking a year to fabricate. The calligraphic mosaic band was designed by Iranian-Armenian painter Edman Ayvazyan, and fabricated with Clarke's assistance. In the northeast corner of the mosque plaza, a minaret rises above the plaza level. A spiral stairway inside the minaret provides access to loudspeakers that broadcast the prayer calls five times daily.