About 5.5 km south of the crossway of Achladeri, near the Gulf of Kalloni, is the acropolis of ancient Pyrrha, the later castle of the Royals. Built in a particularly fortified position, ancient Pyrra dates back to the early Bronze Age. It was probably destroyed in 231 BC. from a great earthquake only the “Proasteion” was saved on the southern slopes of the hill of the acropolis. I. Moutzouris assumes that during the Byzantine period there was a fortified settlement called Vassilika on the acropolis, which was later abandoned when the current settlement of the same name was built.
In 1939, a three-aisled early Christian basilica was discovered and excavated very close to Pyrra, within the estates of the Charity Shops of the Ap. Simantiris Bequest. Part of the arch, the pastophori and part of the mosaic floor are preserved.
Following the road to the settlement of Vasilika, on the way we come across the small church of St. Veroniki.The Byzantine castle occupied the site of the acropolis of Pyrrha. West of the castle there is the chapel of St. Dimitriou, in which there are built-in architectural elements of an early Christian basilica. Scholars claim that the members built into the two chapels come from the basilica of Achladeri.
