The citadel (akropolis) of ancient Kreusis lies on the east slope of mount Korombili. The fortification walls with towers of the 4th cent. B.C. - of initial length of c. 300 ms - are preserved in a good condition. Krusis and the nearby Siphai were the ports of ancient Thespies.

On a low hill opposite the akropolis of Kreusis stands a medieval tower (14th cent A.D.).