The patron of the hamlet of Joannis, part of the town of Aiello del Friuli, is Saint Agnes, celebrated on the Sunday following 21 January: it is the hamlet's main festival.
In the main town, Saint Ulrich is celebrated instead, on 4 July, in the Church of Sant'Ulderico. The town also holds the Cappella Madonna di Colloredo and the Cappella San Nicolò.