Bab al-Silsila (Chain Gate) is one of the main entrances to al-Aqsa Mosque, built during the Ayyubid era. Situated in the western boundary wall of the mosque, it is relatively high, having a double wooden door with a small opening that allows a single person to pass through when the double door is closed.
There are 15 gates leading to the Masjid al-Aqsa compound of which 10 are open and five are closed. Most gates are located on the western boundary wall of the mosque. The keys to all the gates, with the exception of the Maghrebi gate, are held by the Islamic waqf. However, they can only open or close gates with the permission of the Israeli police, who control access to the site.