The Golden Gate, also known as the Eastern Gate, is Jerusalem's oldest gate. It is located on the eastern side of Mount Moriah the Jewish Temple Mount, where Solomon's Temple and Herod's Temple once stood.
When Muslims conquered Jerusalem in 638 CE the Jewish city was Islamicized. A Muslim shrine, the Dome of the Rock was built on the Temple Mount, Herod's Temple had been destroyed centuries earlier and the Jews had been exiled by the Romans. The Golden Gate was still open and was used by Muslims who worshipped on the Temple Mount.
In 1541, Ottoman Sultan Suleiman the Magnificent, in response to a belief that the Messiah would enter the Golden Gate and rebuild the Temple, had the gate sealed. A Muslim cemetery was built in front of the gate, in the hope of preventing the Jewish Messiah from entering. The Golden Gate has remained sealed to this day.