The Žilina castle is assumed to be already there as early as the 13th century, of which there are documents from 1318 to 1454.

It was originally consecrated to Mary, but in the 16th century it was reconsecrated as the Church of the Holy Trinity.

The main altarpiece in the main altar depicts the Holy Trinity, the side altars depict Immaculate Conception and the Crucifix, and near the entrance there is a picture of Saint Anne.

[1] In the compounds of the church stands separate Burian's Tower, built in the first half of the 16th century.

The tower offers a good view of the preserved medieval part of the town.