The Frankish tower of Lilaia is a late medieval tower near Lilaia, in Phocis, central Greece.^[1][2]

Lilaia lies on the northern slopes of Mount Parnassus and close to the springs of the Boeotic Cephissus.^[1] The tower lies about 1 kilometre (0.62 mi) southeast of the modern settlement, at the site of the acropolis of ancient Lilaea.^[1][2] The tower is built on top of the well-preserved Classical-era city wall,^[2] and its lower part is built entirely of reused spolia, whereas the upper parts are built with quarried stone and brick.^[1]

The tower measures 13.3 metres (44 ft) by 7.6 metres (25 ft), with walls about 1.65 metres (5.4 ft) thick, and survives to a height of approximately 10 metres (33 ft).^[2] Its entrance was above-ground at the level of the first floor, on the western wall.^[2] Its exception size makes it very likely that it was the centre of an estate or fief.^[3]

• Koder, Johannes; Hild, Friedrich (1976). Tabula Imperii Byzantini, Band 1: Hellas und Thessalia (in German). Vienna: Verlag der Österreichischen Akademie der Wissenschaften. ISBN 978-3-7001-0182-6.
• Lock, Peter (1986). "The Frankish Towers of Central Greece". The Annual of the British School at Athens. 81: 101–123. doi:10.1017/S0068245400020104. S2CID 129263771.

38°37′33.5″N 22°30′21.2″E / 38.625972°N 22.505889°E / 38.625972; 22.505889