Passage 2.25.8
προϊοῦσι δὲ ἐντεῦθεν καὶ ἐκτραπεῖσιν ἐς δεξιὰν Τίρυνθός ἐστιν ἐρείπια. ἀνέστησαν δὲ καὶ Τιρυνθίους Ἀργεῖοι, συνοίκους προσλαβεῖν καὶ τὸ Ἄργος ἐπαυξῆσαι θελήσαντες. Τίρυνθα δὲ ἥρωα, ἀφʼ οὗ τῇ πόλει τὸ ὄνομα ἐγένετο, παῖδα Ἄργου τοῦ Διὸς εἶναι λέγουσι. τὸ δὲ τεῖχος, ὃ δὴ μόνον τῶν ἐρειπίων λείπεται, Κυκλώπων μέν ἐστιν ἔργον, πεποίηται δὲ ἀργῶν λίθων, μέγεθος ἔχων ἕκαστος λίθος ὡς ἀπʼ αὐτῶν μηδʼ ἂν ἀρχὴν κινηθῆναι τὸν μικρότατον ὑπὸ ζεύγους ἡμιόνων· λιθία δὲ ἐνήρμοσται πάλαι, ὡς μάλιστα αὐτῶν ἕκαστον ἁρμονίαν τοῖς μεγάλοις λίθοις εἶναι.
Proceeding onward from there and turning to the right are the ruins of Tiryns. For the Argives also displaced the people of Tiryns, wishing to take them as fellow inhabitants and thus enlarge Argos. They say the hero Tiryns, from whom the city took its name, was the son of Argos, who was the son of Zeus. The wall, which alone now remains of the ruins, is the work of the Cyclopes, built of unwrought stones, each stone being so large that even the smallest among them could not begin to be moved by a pair of mules. Long ago the smaller stones were fitted into place in such a way as to perfectly harmonize with the large blocks.