The monastery complex covers an area of approximately 17,000 m2 and consists of the katholikon, two smaller churches (dedicated to the Holy Cross and to St Panteleimon) the dining hall ("trapeza"), the monks' cells ("kelia"), the reception hall or "triklinon" and underground water cistern ("kinsterna"). The complex is surrounded by a wall (the original Byzantine wall was destroyed in 1822), and in the northeastern corner stands a defensive tower, in earlier times used as a library. In addition, outside the walls, near the monks' cemetery, there is a small chapel to St Luke.
The katholikon is the monastery's central structure, dedicated to the Dormition of the Virgin Mary. It is composed of the main church, the esonarthex and the exonarthex. The main church is of an octagonal shape, the so-called "insular" type, found in Chios and Cyprus. Although all three sections date to the 11th century, the main church suffered significant damage in 1822 and 1881, with the result that its current, rebuilt, form is different from the original. The bell tower was constructed in 1900, replacing an older one built in 1512. Originally, the remains of the three founders were kept in the exonarthex, but most of these were destroyed during the sack of 1822.
Along with the katholikon, the only remaining 11th century buildings are the partially ruined tower, the chapel of St Luke, the cistern and parts of the trapeza. The cells, most of which are in a ruined state, date to the Venetian and Genovese periods. A small museum, opened in 1992, exists to the NW of the katholikon, housed in a renovated cell. The displayed artifacts date mostly from the latter 19th century.
Source: wikipedia.org