North of Emir Sultan Camii, this twin-domed mosque (1395), also referred to as just Beyazıt Camii, was built by Mehmed I Çelebi's father, Sultan Bayezit I. It houses the tombs of Yıldırım Beyazıt (Thunderbolt Bayezit), as the sultan was known, and his other son, İsa. Its adjoining medrese is now a medical centre.
