It was built in honor of Saint Tryphon (local name Sveti Tripun), the patron and protector of the city, on the same site where an older church had already existed long ago.

That earlier church was built in 809 by Andrija (Andreaccio) Saracenis, a citizen of Kotor, where the remains of the saint were kept after being brought from Constantinople (now also known as Istanbul).

In its interior there are frescoes from the 14th century, a stone ornament above the main altar in which the life of St Tryphon is depicted, as well as a relief of saints in gold and silver.

The collection of art objects includes a silver hand and a cross, decorated with ornaments and figures in relief.

It is only a part of the valuable objects of the Treasury of this unique sacral building which was the City Hall in the past.