The Seven Mosques, located in Medina, Saudi Arabia, are a group of historic mosques that played a significant role during the Battle of the Trench (Al-Khandaq). This battle was a pivotal moment in Islamic history, taking place in 627 CE.

1. Masjid Abu Bakr: Named after Abu Bakr, the first Caliph, this mosque commemorates his participation in the battle.

2. Masjid Umar: Dedicated to Umar ibn Al-Khattab, the second Caliph, this mosque honors his contributions during the battle.

3. Masjid Ali: This mosque is named after Ali ibn Abi Talib, the cousin and son-in-law of Prophet Muhammad, recognizing his valor in the battle.

4. Masjid Fatimah: Named after Fatimah, the daughter of Prophet Muhammad, this mosque symbolizes her role and presence during the time of the battle.

5. Masjid Salman al-Farsi: This mosque is named after Salman the Persian, who is credited with suggesting the trench strategy which played a key role in the Muslim victory.

6. Masjid al-Fath: Also known as the Mosque of Victory, it commemorates the overall success and strategic brilliance of the Muslim forces in the battle.

7. Masjid Qiblatain: Known for its historical significance of having two qiblas (directions of prayer), this mosque is associated with the change of the qibla from Jerusalem to Mecca.

Each of these mosques serves as a reminder of the individual contributions and strategic importance of the Battle of the Trench in Islamic history.