Al-Masjid an-Nabawī (), known in English as The Prophet's Mosque, and also known as Al Haram, Al Haram Al Madani and Al Haram Al Nabawi by locals, is a mosque built by the last Islamic prophet Muhammad in the city of Medina in the Al Madinah Province of Saudi Arabia. It was the second mosque built by Muhammad in Medina, after Masjid Quba'a, and is now one of the largest mosques in the world. It is the second holiest site in Islam, after the Masjid al-Haram in Mecca. It is generally open regardless of date or time, and has only been closed to visitors once in modern times, during the 2020 COVID-19 pandemic.