Kloštar Ivanić - the oldest settlement in this area today counts about 2500 inhabitants. It was in possession of Zagrebian bishops since the foundation of the diocese in 1094. Written documents reveal us that bishop Stjepan II Babonić has built the Church of St. Mary and monastery between 1227 and 1242. From 1246 to 15th century the monastery was the home of Benedictines, and in 17th century, when the danger ceased, it was restored.
The Church of the Assumption of the Blessed Wirgin Mary is one of our oldest shrines of the Virgin Mary all over the Country. In the middle of 18 th century the church was enlarged and baroqued. Franciscans took over the Church in 1936 and built new vicarage and monastery with hall and library. Untill then Franciscians had a monestary near the St. Nicolas Church (destroyed in 1944), for they came in Kloštar Ivanić in 1508 invited by bishop Luka Baratin and there they constructed a large gothic monastery. They left Kloštar to avoid Turkish invasion in the mid 16th century, and returned there in 1639 during the diocese of Benedikt Vinković. Since 1719 the monastery includes moral theology and since 1670 a pharmacy.
In 1850 the church tower was chosen to be the central point for the first land measuring in the Kingdom of Croatia and Slavonia. The Church is still under reconstruction and after the earthquake in 1969 Trappists from Banja Luka stayed there, and were replaced by Carmelites upon returning home.
Today the Kloštar Ivanić Municipality has a population of about 6000, mainly engaged in agricultural-vegetable production, fruits and grapevine growing, and horse breeding is developing. Kloštar Ivanić is the headquarters of the Posavac Horse Breeders Union, aiming to preserve and develop this autochthonous Croatian horse.
The most significant feasts are: The Municipality Kloštar Ivanić Day - on St. John Day, June 24th, with annual fair and exhibition of horses and decorated carriages; on August 15th ceremonies honoring Mother Mary with pardoning and welcoming pilgrims; in August "tamburijada" (Competition of traditional instrument - tambura players), and in December celebration of the St. Nicolas Day and Christmas holidays. There are also celebrations on St. Vincent Day, honoring traditional customs related to vintage and harvest. KUD (Cultural- Artistic Club) "Kloštar" preserves and cares for the folklore tradition of the area, and there are also Kloštar Majorettes.