Holiest sites in Shia Islam

Muslims, including Shia, Sunni, Ibadi and other branches, agree on two holiest sites in Islam being the Masjid al-Haram (including the Kaaba) in Mecca; the Masjid an-Nabawi in Medina. Sites associated with the Islamic prophet Muhammad, his daughter Fatima and son-in-law Ali, the respective Shia Imams descended from them and their family members (collectively referred to as Ahl al-Bayt) are considered holy by the different Shia Muslim sects.

Source: Wikipedia — Holiest sites in Shia Islam (CC BY-SA 4.0)