先知清真寺, also known as the Prophet's Mosque, is located in Medina, Saudi Arabia. It is one of the holiest sites in Islam and was originally built in 622 CE by the Prophet Muhammad himself. The mosque is known for its beautiful architecture, including a large green dome that marks the burial place of the Prophet. The mosque can accommodate over a million worshippers, making it a central place for prayer and community gatherings. It features stunning minarets and expansive courtyards, providing a serene environment for visitors. The Prophet's Mosque plays a significant role in the annual Hajj pilgrimage, attracting millions of Muslims from around the world.