The church of St. John is located at a wooded location amid oaks near the village Roukani and is one of the most historical Byzantine monuments of Crete. The church dates back from the 11th-12th century and possibly operated as a monastery dedicated to St. John the Theologian. Today the church is dedicated to St. John the Baptist.
The church belongs to the cruciform type inscribed by a dome, which was used mainly in other places of Greece, not Crete. Thus it is believed that the builders came from Constantinople. Impressive is the heavy wooden door, while the yard hosts marble funerary inscriptions, a Roman cistern and tombs of monks in the 16th century. At this place a leaden seal was found of the Venetian period, with the name of the Archimandrite Andreas Roukanis, today exhibited in the Historical Museum of Heraklion.