Basilica. John is part of the monastery complex of St. St. John the Evangelist, located in Biograd. Former Benedictine monastery today is a ruin. However, it was one of the most interesting architectural buildings, reminiscent of the past of Biograd.

The monastic complex was built around 1060, during the reign of the king of Croatia of Peter Krešimir IV. It should be noted that the flourishing of the power of the Kingdom occurred at this period. Built the monastery of St. John the Evangelist was completely on the money of the king. In 1076 was fortified monastery roof, which made the whole building is much higher than before.

A monastery with a Basilica was destroyed by the Venetians, trying to conquer Biograd in 1125. After this, the monks moved to the island of Pasman, where he again founded a monastery, but of STS. Cosmas and Damian.

Over time from the Basilica of St. John in Biograd leaving only the Foundation, but even in its outline can be concluded that the structure was once a three-nave Basilica. The ruins were discovered by archaeologists in the city center.

Of particular importance in the history of the monastery and the Basilica plays the remaining cartoleria, that is, collections of documents, which prove that the monastic lands in the territory of Biograd and Donsky has been legally in 1060, and in 1396, respectively. In articulare also preserved bookmarks, and in the fields were seen recording in the Glagolitic script.