The Dome of the Rock is one of the most magnificent Islamic structures in the world, built in 691 CE under Caliph Abd al-Malik. Its stunning golden dome protects the sacred Foundation Stone from which Prophet Muhammad is believed to have ascended to heaven. The building features exquisite mosaics and turquoise-blue tiles. Interior access is restricted to Muslims only, but all visitors can admire its exterior beauty from the Temple Mount plaza. The octagonal structure is an iconic symbol of Jerusalem.