Hierapolis. Pamukkale. Turkey. View of the ruins of the monumental stoa basilica on the east side of the agora of the ancient city. Dating from the 2nd century AD, the once two-storied stoa basilica was 20 metres high and 280 metres long, running the entire east side length of Agora. Part of the marble staircase has been reconstructed and a column has been re-erected.