Although many think the Dome of the Rock is a mosque, it is not true. It holds no prayers and is not the "Mosque of Omar," as many call it by mistake. The Mosque of Omar is a mosque located in the Christian Quarter near the Church of the Holy Sepulchre.
Judaism views the Dome of the Rock as a place built above the site of the altar of the binding of Isaac. There are Jews who see here the place of the foundation stone, which is the rock from which the world was created. Most believers agree with the belief that the location of the Dome of the Rock is the holy site of the First Temple and the Second Temple of the Jews.
In Islam, on the other hand, the Dome is seen as the foundation stone for the place where the Prophet Muhammad ascended to heaven. Here, on the Temple Mount, he prayed, according to the Muslim faith, the Prophet Muhammad and ascended to heaven.
The original dome of the Dome of the Rock collapsed in 1016 CE and five years later it was rebuilt.
The Dome of the Rock was built on the site where the Roman temple Jupiter Capitolinos was located. This temple was also built over another temple - the Second Temple of the Jews, which was destroyed by the Romans during the conquest of Jerusalem in 70 CE.