Macedonian dynasty
Outside Promachonas, on the Thessaloniki-Promachonas highway, is a monument dedicated to the Byzantine Emperor of the Macedonian dynasty Basil II (Monument of the Battle of the Key). At the top of the monument is placed the symbol of Byzantium, the double-headed eagle, while on the marble column an inscription has been engraved. The site of the Battle of the Key where Basil II defeated the Bulgarian army in 1014 is now inside Bulgaria.