1 Masjid E Quba = It was Build in 622. It is the oldest Mosque of Islam and located in Madina.
Masjid Nabawi = Its the second Mosque of Islamic History and was build in 622. It is Located in Madina. Prophet Muhammad SAW is also buried here.
Masjid al Qiblatain = Its also located in Madina and was built in 623.
Masjid Al Haram = It is located in Makkah and it was built in 638. Kaabah is also in this Mosque. Its the most important religious place for Muslims.