SERDICA (Konstantin Shalganov – director@sofiahistorymuseum.bg) The Late Mediaeval rooms were dismantled. Room E was dug into the ground and it served as a cellar. A pot was discovered under its brick floor, containing a hoard of nine silver coins, one of them a denar of Louis II of Hungary minted in 1521 – 1525. Part of a cardo 5 m wide was discovered, with kerbs on its both sides, each one 60 cm wide. A stone wall with a pediment that probably supported a column of a stylobate was documented to the east of the kerb. A drain and three terracotta water-conduits were documented under the cardo. The pottery that was discovered indicated the chronology of the construction activities. The drain functioned after the middle of the 3rd century AD and until the middle of the 4th century AD. At the end of that period, or a little bit later, the water conduits were installed, while the latest reconstructions and repairs of the street occurred at the end of the 4th century AD, or during the 5th century AD. A layer with pieces of charcoal was documented under Room L, situated under a layer of tegulae and imbrices from a collapsed roof of the end of the 2nd – 3rd centuries AD, judging from the pottery. A layer with pieces of charcoal and sherds of the 2nd – beginning of the 3rd centuries AD was explored, containing a hoard of 15 denarii, mostly Republican of the 1st century BC, one Republican of the end of the 2nd century BC and three from the Roman Imperial period, the latest one of Trajan.