The Church of Aghios Nikolaos
North of the town of Aghios Nikolaos on top of a small peninsula, the church of Saint Nikolaos, the oldest example of classic early Byzantine architecture, is located.
It is quite a small church that was built between the 7th and 9th century, during the Iconoclastic period, as indicated by its schematic decoration. Geometric and natural patterns, and intersecting circles unite to form multi-coloured leaves of bright colours, and schematic tree trunks with branches, in addition to diamond and rosette shapes comprise the interior decoration.
These illustrations had been super-imposed over the originals because of the ban on icon painting in churches imposed by the Byzantine emperors of the Isausus dynasty (712-802A.D.) which, having commenced in Istanbul, spread throughout the entire Byzantine Empire eventually reaching our town. When the church was being repaired during the 14th century, after suffering damage from the earthquake of 1303 that rocked and almost destroyed Crete, it was discovered that the schematic decorations had concealed the Christian paintings.
 

The Church of Panagia the Brefotrophus
This small one-roomed covered-arch church located in the center of town is dated from the beginning of the 12th century, according to the inscription which was discovered on its floor.
The church, which is dedicated to the Virgin Mary, is named after Brofotrophus because it is believed that she can perform miracles, in particular those relating to childhood iseases. It is one of the oldest monuments in the area.

Church of Saint John the Theologian
This church is located two kilometres from Kritsa on the road to Krousta.
According to experts, it is the most important example of ecclesiastic architecture of the 16th and 17th century, having three parallel naves and one western transverse, which were consecutively built until the 18th century.

Church of  Our Lady the Guide - (Panagia y Odigitria)
The pride of more recent residents of Kritsa. A twin-nave domed basilica (6 domes), with peculiar architecture that was founded in November of 1852 (later Turkish occupation). It is dedicated to the Presentation of the Virgin Mary, (right nave) and to Saint Harambalos. The recent renovation (2001) has revealed the unsurpassed and unaffected beauty of the church.