Holiest sites in Sunni Islam

Both Sunni Muslims and Shia Muslims agree on the three holiest sites in Islam being, respectively, the Masjid al-Haram (including the Kaaba), in Mecca; the Prophet's Mosque (Al-Masjid Al-Nabawi), in Medina; and Al-Masjid al-Aqsa, in Jerusalem. This Hadith emphasizes the religious significance and distinguished position of Islam’s three sacred mosques: Narrated by Abu Hurayra: The Prophet (ﷺ) said: "Do not undertake a journey to visit any Mosque, but three: this Mosque of mine (Prophet's Mosque in Medina), the Mosque of al-Haram and the Mosque of Al-Aqsa"Sahih al-Bukhari quotes Abu Darda as saying: "the Prophet of God, Muhammad said a prayer in the Sacred Mosque (in Mecca) is worth 100,000 prayers; a prayer in my mosque (in Medina) is worth 10,000 prayers; and a prayer in al-Aqsa Mosque is worth 1,000 prayers", more than in any other mosque.

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