Visiting Mecca for the Ḥajj is an obligation upon all able Muslims. The Great Mosque of Mecca , known as the Masjid al-Haram, is home to the Kaaba, believed by Muslims to have been built by Abraham and Ishmael. It is Islam's holiest site and the direction of prayer (qibla) for all Muslims worldwide. [8] . Medina And Makkah ( Mecca ) Walking Tour | Saudi Arabia Embark on a mesmerizing journey with us, a walking tour through the sacred cities of Medina and Makkah ( Mecca ), Saudi Arabia. This immersive ... Mecca , city, western Saudi Arabia, located in the Ṣirāt Mountains, inland from the Red Sea coast. It is the holiest of Muslim cities. Muhammad, the founder of Islam, was born in Mecca , and it is toward this religious center that Muslims turn five times daily in prayer (see qiblah).