the mosque was named after Bayezid I, nicknamed "Lightning", which indicated his quick actions in relation to the enemy. The mosque was built in 1389 when Bayezid became the sultan. Initially, it was "part-time" a shelter for Sufi dervishes. The mosque has a portico with domed rooms.
Dominating the surroundings, the mosque, with a high marble five-domed portico and a solitary minaret, was built in the classical "Bursa style" with a large central hall between the eyvans. The single-dome turbe of the Sultan with Byzantine red marble columns in front of the entrance stands on the northern slope of the hill. In it, in addition to the sarcophagus of Bayazid, the ashes of Isa, the son of the “lightning-fast” Sultan Bayazid I and an unsuccessful pretender to the throne, also rest.
Inner courtyard - such covered courtyards of urban mosques preceded the open courtyards of the style that replaced it, and the prayer hall is separated from each other by a massive arch rising from two mihrab niches. The walls of the prayer hall are decorated with magnificent calligraphic ornaments.