Situated in a natural basin at the bottom of the Eastern slope of the Ariha Mountain, it is the remains of a complete Byzantine settlement including remains of houses, baths, tombs and a church. The existence of baths in this region shows how prosperous this region had been. This region was rich in vine and it was a center for its cultivation and the production of wine. 

The floor of these baths dates back to 473, and are some of the most preserved in Syria. A large mosaic was found in the main meeting hall of the baths, by an American expedition and has since been destroyed.

Also found at Serjilla are the extensive remains of houses, and the terraces on the slopes around it, where stones used to keep the vine in place, can still be seen.