Masjid Al Haram: this is the most holy Islamic place on earth located in Makkah Saudi Arabia. Kaaba is in middle of this Masjid.
Masjid Al Nabawi: after Masjid Al Haram this is second most holy site of Islam. it is also known as Prophet's Mosque.
Masjid Al Aqsa: this is third most holy site for the Muslims and also known as Qibla e Awal.
Jannat Ul Baqi:
Cave of Hira: