capital at the beginning, but at the beginning of XIV. century, they moved the government center to Beçin, since it was easier to defend. Beçin has been the capital of the kingdom during the sovereignty of Tacettin Ahmet Gazi. After the death of him in 1391, the region has been added to the Ottoman Empire by Yildirim Bayezid and the government center has been moved to Balat (Milet).

The ruins of the buildings of the city that reached today:

Roman Grave: It is in the residence center of today of Beçin, beside the ruin place road. The chamber is in the form of a grave.

Inner Fort: It is in the northern side of the city. The fort, which has taken its shape of today in its period, has been partially based on a temple. The opuses, whose existence could be determined in the area surrounded by city walls that are in very bad condition, are a bath, a cistern and the ruin of a vault building. The bath is thought to be built in XIV century, during Menteseogullari Period.

Large Bath: It is between Ahmet Gazi madrasa and Inner Fort. It is dated in XIV century. It is the largest among the baths in the city. The dressing part of the bath having three liwans is destroyed.

Ahmet Gazi Madrasa: It has been constructed by Tacettin Ahmet Gazi, Mentese Ruler, in 1375 according to its inscription. It has an open courtyard and two liwans. In the main liwan of the madrasa, the graves of Ahmet Gazi and his relatives are located.

Orhan Bey Mosque: It is across Ahmet Gazi Madrasa. It is understood that the building was in construction in 1330s, when Ibni Batuta visited Beçin. It has a rectangular plan close to a square. Its entrance and the part of its walls up to 1.5 m height are standing. From the references and excavation results, it is understood that this is a wood supported mosque.

Ruler Mansion: It is in northwestern of Ahmet Gazi Madrasa. The excavation works are continuing in the building which is thought to belong to 14th century.

Ruler Bath: It is in the north of the mansion. The water tank, boiler room and undressing part of the bath which is longitudinally heated and which has double cells, have been discovered during the excavation works performed in 1995.

Kizil Caravansary: The caravansary, which is dated to the end of 14th century or 15th century, has two floors. The stable part at the lower side is covered with a vault that is partially destroyed. The two parts in the upper side are understood to be covered with a dome.

Chapel: It is approximately 200 m southern of Orhan Mosque. It is thought to belong to Mid - Byzantine Period.

Yelli Mosque: It is in Kepez area. It is dated to 14th century. It is a building having a square plan covered with a single dome. In its northern side, there is a two - unit end community place.

Karapasa Madrasa: It is a madrasa having an open courtyard. It is estimated to be constructed at the end of 14th century or in 15th century. It is in a very ruined condition.