The
remnants of a single-nave 12th century church with a semi-circular apse covered
with stone flagstones are located in the Na Glavah area close to Jezera. The
church was built using regularly shaped, elongated rectangular stone blocks in
a way that is typical of the Romanesque period. Besides the famous two-storey
prince's chapel in Krk Cathedral, which is unique on the eastern Adriatic
coast, this is the only church known so far on the island of Krk dedicated to
the patron saint of the Krk Diocese. Historical records from the visitation in
1565 refer to this chapel, stating that it had no door. It is known that it
belonged to the Antončić family, and was mentioned as being abandoned in 1659.
The
Chapel of St. Quirinus was a rather large building. It was located on the right
side of the present main road that leads from Jezero to Omišalj, about five
hundred metres across land used for pasture. The apse of the former Church of
St. Quirinus and the two side walls have been well preserved and reach all the
way up to the roof. Only the façade has collapsed. The area that surrounds the
church is still called Kirinski, keeping alive the memory of the church's name.
The
nearby Church of St. George on the Lake (Sv. Juraj na Jezeru) has a similar
history. There is a keystone from this church that originates back to the year
1530 which is today kept in the Lapidarium collection in Omišalj. This
keystone, carved from local limestone, once belonged to the triumphal arch in
the shrine of the Church of St. George. Since the church was built in the
Romanesque period of the Middle Ages, the year on the stone obviously refers to
repair work. The number of churches around Lake Jezero indicates its importance
for fishing and hunting in the Middle Ages.