The monastery of Ayios Ioannis Prodromos is situated on a marvellous site, just
outside the populated area of Kessariani, at an altitude of almost 300 meters.
The monastery is dedicated to the ablation of the caput of Ayios Ioannis Prodromos.
According to very few records, the monastery must have been founded in the 11th
century or later, as well as the rest of the monasteries in Hymettus. Its architectural
style is similar to the others'. The monastery of Ayios Ioannis Prodromos still
functions as a monastic community. The alterations made to the monastery from
the 1950s onwards, have certainly brought the monastery to a better shape, but
made its history indistinguishable.