Medina is located in the north of Riyadh, the capital of Saudi Arabia and in the middle of Najd (a geographical central region of saudi Arabia) with a dry desert climate and hot summers and cold winters. The name of the city was “Yathrib” before the emigration of the Prophet of Islam, and was called “Medina al-Nabi” (City of the Prophet) after the arrival of the Prophet. The Prophet’s Mosque (Masjid al-Nabi, the mosque of Qaba and the mosque of Zuqiblatain are in the city. Today, Medina is considered one of the holy cities of Muslims. The tomb of the Prophet is located next to the al-Nabi mosque and is one of the most important Muslim shrines in the world.