Yıldırım (Bayezid I) Social Complex
The construction of the complex was started by Sultan Yıldırım Bayezid in 1390.

The Social Complex, which is considered one of the most perfect architectural works of Bursa, became an important education center of the period with its madrasah and hospital (darüşşifa) and drew the eastern border of the city. It is undoubtedly the most "complete" social complex as it contains a mosque, madrasah, soup kitchen, hospital and bath. All building units of the Social Complex were built in accordance with the topography of the place. The water brought to the region, especially before the construction of the social complex, also caused the settlement to become denser in the surrounding area.

The mosque within the social complex was built in the "⊥" plan type, like the mosques in the other Sultan Complexes, and is the first example of the practice that has been recorded in the architectural literature as the "Bursa Arch".

The tomb, built in 1406, contains the sarcophagi of the sultan's wife and one of his children. The hospital (Darüşşifa) was recently reconstructed and currently serves as Yıldırım Eye Center (Eye Foundation). The madrasa located in the northwest of the mosque consists of 20 student rooms and a classroom. Its most important feature is that it is the first Ottoman Madrasa with a closed front. The imaret did not survive. However, the area where the soup kitchen is located continues its public service today, as a school has been built on it. The social complex gave its name to the neighborhood in which it is located.

It is located within the area declared as a UNESCO World Heritage Site in 2014.