Passage 8.32.1
τοσάδε ἐνταῦθα ἀξιόχρεα ἦν· ἡ δὲ ἐπέκεινα τοῦ ποταμοῦ μοῖρα ἡ κατὰ μεσημβρίαν παρείχετο ἐς μνήμην θέατρον μέγιστον τῶν ἐν τῇ Ἑλλάδι· ἐν δὲ αὐτῷ καὶ ἀέναός ἐστιν ὕδατος πηγή. τοῦ θεάτρου δὲ οὐ πόρρω λείπεται τοῦ βουλευτηρίου θεμέλια, ὃ τοῖς μυρίοις ἐπεποίητο Ἀρκάδων· ἐκαλεῖτο δὲ ἀπὸ τοῦ ἀναθέντος Θερσίλιον. πλησίον δὲ οἰκίαν, ἰδιώτου κατʼ ἐμὲ κτῆμα ἀνδρός, ὃ Ἀλεξάνδρῳ τῷ Φιλίππου τὸ ἐξ ἀρχῆς ἐποίησαν· ἔστι δὲ ἄγαλμα Ἄμμωνος πρὸς τῇ οἰκίᾳ, τοῖς τετραγώνοις Ἑρμαῖς εἰκασμένον, κέρατα ἐπὶ τῆς κεφαλῆς ἔχον κριοῦ.
These noteworthy sights were there. Beyond the river, in the southern district, lay what was considered the largest theater in all of Greece; within its precinct stands a perpetual spring of water. Not far from the theater remain the foundations of the Council-house, constructed for the Ten Thousand Arcadians, and named Thersilion after its founder. Nearby, there is a house, privately owned in my day, originally built for Alexander, the son of Philip. Beside this dwelling stands a statue of Ammon, resembling the square Herm figures, bearing upon its head the horns of a ram.