The Thersilion at Megalopolis

This is it, apparently

Non-fiction ~ scholarly article
Published in The Journal of Hellenic Studies, November 1893
Available to buy here, if you're desperate for something to read or your sleeping tablets aren't working any more

ABSTRACT

The Thersilion, or assembly hall, built in close connexion with the theatre at Megalopolis, has now been completely cleared. Several plans of the building, including a conjectural restoration, have already appeared in the special Supplement to the Journal of Hellenic Studies, published this year. The latter was based on the small tentative diggings already made. The plan (Pl. XXI.) in this number shows the whole area, and includes many additions and corrections from the earlier plan.
The chief point of interest has been the arrangement of the columns behind the centre. It was evident at once, as soon as the clearing began, that the plan did not in all respects bear out Mr. Schultz's conjectural restoration (Supplementary paper, J.H.S., p. 19). This was due partly to the fact that in the previous small diggings on the site two columns in the outer row next the south wall had been missed, partly because it was found on remeasurement that the centre was incorrectly marked.