The mosque located in Yeşil district was built in 1419 by Çelebi Sultan Mehmed. Yeşil Mosque, which is one of the T reverse T ”planned mosques, is one of the most beautiful buildings in our country where Bursa is located. The architect of the mosque is Hacı İvaz Pasha. In the structure, various building materials from the Byzantine period. The crown gate at the entrance of the Green Mosque is a beautiful product of Turkish stone carving. The muqarnas live is of extraordinary beauty. Production of green stone and marble in the door arch. There are two windows on the right and left sides of the stone door and an outer mihrab between them. They also have very fine stonework. The mosque was built by Nakkaş Ali, the father of the famous poet Lamii Çelebi. Most of the mosque is covered with tiles. The interior walls, ceilings, vaults and passage iwans are all covered with tiles. The tiles of the mosque were processed by a master named Mecnun Mehmet. One of the most excellent examples of tile work in the mosque is the mihrab, which is more than ten meters high. The mihrab with its various geometric motifs and flowers is one of the most beautiful places of the mosque. According to some authors, this mihrab is almost a tile paradise.With a writing belt that uses the sülüs and küfî styles of calligraphy from outside to inside; Twelve rows of stalactites come from a wipe, a water from the geometric motif and then flowering interior moldings. On the right side of the mihrab, there is a pulpit, which is the product of an elaborate wooden workmanship, with a narrow staircase with two balustrades and a top covered with hexagonal cones. It is possible to see the best examples of wooden workmanship in Bursa in this mosque. Window covers are good examples of the timber craftsmanship of the time. There are very fine ornaments on the sliced ​​domes, which are not found in other mosques. There is a beautiful fountain inside the mosque. The fountain made of a single piece of the fountain is of unique fineness. Researcher Charles Texier states that Bursa is perhaps the most perfect work of the Ottoman reign. Historian Hammer writes that the mosque's minaret and its domes were also tiled. Evliya Çelebi refers to the minarets and domes covered with green colored tiles as the reason why this mosque is called green.