The Grand Mosque, which stands out as one of the most important mosques in Mugla, is located in the Tabakhane district. This special mosque, which is Seljuk architecture, was built by Ibrahim Bey, The Sultan of Mentese. According to the inscription on the gate of the mosque, the Great Mosque was built in 1334.
The inscription also says, ' I am the son of Orhan, Ibrahim Bey. I have built this Masjid in the name of giving me a mansion in heaven...’ This manuscript is written in Arabic. The grand mosque underwent a serious renovation in 1938. During this repair, ablution places and congregational areas are added in order to expand the mosque. In the minaret section of the Grand Mosque, smooth cut stones attract attention. At the same time, this episode is the only minaret. This part is round-bodied and is located on a stone plinth. The roof was made from wood. In the repair carried out by Abdizade Bey in 1938, the original texture of the mosque is preserved.
The Grand Mosque is known as the oldest mosque in the city. The historical mosque, a 14th-century Anadolu Selcuklu monument, has faced a fire disaster in the past century. On top of this, a wealthy family living in Muğla voluntarily provides for the restoration of the mosque. Especially a philanthropist named Haji Nazife Hanım has a very important contribution to the raising of the mosque again. But unfortunately in the aftermath of the fire the original structure of the mosque is largely lost. It is quite sad that details of artistic value have disappeared after this fire. There is a rectangular plan in the lower part of the mosque. On the upper side, the roof plan is preferred.
Not only in the city of Muğla, but also regarded as one of the most important Seljuk monuments in Anatolia, the Grand Mosque is located in the center, in the place known as Factory Street.