The patron of Leonessa is Saint Joseph of Leonessa (1556-1612), celebrated on the second Sunday of September in the Church of San Giuseppe.
Around 29 June, the feast of Saints Peter and Paul, the Palio del Velluto (Velvet Palio) is run, a contest between districts held without interruption from 1464 to 1556 and revived in 1997. The town is seat of eight università agrarie, ancient institutions for the administration of communal-use lands. The town holds the Torre Angioina, the Fontana Farnesiana and the Porta Spoletina.
