At the commercial agora, the biggest Hellenistic structure in town, with 12 shops, along the northern side of the terrace, that was clad with slabs of stone. A long wooden stoa led along the shops, two steps led up to it.
Looking at the map I got at the site and at the View map facility I am pretty certain this was what that map calls Sebastion (Sebasteion, compare my Aphrodisias site for a much more impressive one). It being in Turkish says "Kutsal Ev", which would be "Holy house".