Which city in Saudi Arabia is considered the holiest city in Islam?

Mecca is recognized as the holiest city in Islam due to its historical and religious significance. It is the birthplace of the Prophet Muhammad and the site of the Kaaba, which is located within the Masjid al-Haram (the Grand Mosque). Every year, millions of Muslims from around the world travel to Mecca to perform Hajj, one of the Five Pillars of Islam. This pilgrimage is obligatory for all able-bodied Muslims who can afford it and takes place during the Islamic month of Dhu al-Hijjah. Additionally, Mecca is also significant for daily prayers, as Muslims are required to turn toward the Kaaba when they pray.

In contrast, while Madinah is also significant as the second holiest city in Islam, being the location where the Prophet Muhammad established the Muslim community and is buried, it does not hold the same status as Mecca. Riyadh, the capital city, and Jeddah, a major urban center and entry point for pilgrims, do not carry the same level of religious importance as Mecca.