The church of Agios Constantinos is located at the northern end of the district of Zarkaia and is in basilica style. We do not know exactly when it was built. According to a local testimony, there used to be a smaller church of the same name, lower down, near the bridge of Pirona. The village then decided to build another larger church in the place where it is today. This church was left uncovered for a time. Probably the present church is a building of the early 20th century. In recent years, maintenance and renovation works have been carried out here as well. It celebrates on 21 May.