ODESSOS (Valeri Yotov – valeri.yotov@gmail.com, Alexander Minchev) A large architectural complex was discovered. Its façade was to the southwest and its northwestern part was two-storey. The walls were 0.85 – 1.05 m wide, built in opus mixtum, and the roof was covered with tiles. The complex consisted of a cistern, a corridor, a rectangular pool, an ellipsoid pool, a row of parallel rooms and a room paved with bricks. The cistern was 14 m long and its southern wall was 85 cm wide, preserved up to 2.70 m in height. Its inner side was covered with hydraulic plaster. The rectangular pool adjoined the eastern wall of the cistern. It was 3 m wide and covered with hydraulic plaster. Its inner side was faced with marble veneer and there was a drain, 60 cm wide. The corridor was roofed and consisted of two rooms, 2.50 m wide. The ellipsoid pool was situated to the south of the corridor. It measured 7 m by 9 m, covered with hydraulic plaster, and its inner side was faced with marble veneer. An U-shaped structure, 12.50 m by 9.50 m in size, surrounded the ellipsoid pool and there were several stone platforms, 1 m by 1 m in size, built around it, probably to facilitate the access to the pool. There was a room to the north of the pool, connected to the corridor. It was paved with bricks and measured over 9.10 m by 5.40 m. There was a row of parallel rooms situated to the west of the ellipsoid basin and the cistern. Their roof was covered with tiles and their floor was paved with bricks. A coin of Anastasius I Dicorus was found in one of the rooms. The finds from the excavations included Late Antique sherds, mostly from amphorae and small lids, fragments from window glass and marble veneer, and two Late Antique bronze coins. The architectural complex was a nymphaeum that functioned during the 5th – 6th centuries AD.