The collection of sacral works is located on the Square of Pope John Paul II and keeps the precious heritage from the churches of Trogir and Čiovo – the works of Blaž Jurjev Trogiranin, Quirizio da Muran, and Gentile Bellini. The remains of the hexagonal shape church of Saint Mary from the 9th century are held in a closed yard. The church of Saint Sebastian was built in the first half of the 15th century as a protection from the plague. Instead of a church tower there is the tower with a clock, and today it is the memorial for those who died in the Croatian Civil War.

The marble relief of Kairos is kept in the Benediction monastery of Saint Nicholas. Kairos is a divine figure representing the right and opportune moment (4th and 3rd century B.C.). In the monastery there is also a sacred painting of the ‘Mother of God with Child’ from the 8th century.
The church of Saint Nicholas is the only preserved female Benedictine monastery in Trogir. It was built on the grounds of a smaller and older church and combined with the southern gate of the ancient town which has characteristics of the Romanesque period.