The Palazzo del Comune also called dei Priori, with its solemn and elegant architecture, is one of the most important public buildings in Umbria. Construction began in 1322; it was interrupted after the completion of the first order of mullioned windows in 1338 and was never completed. The emblem of the Municipality is carved on the lunette of the main door and on the architrave an inscription, now worn, recalls the name of the architect, Angelo da Orvieto, who almost at the same time carried out the construction of two other public buildings: that of the Consuls in Gubbio and that of the Podestà also in Città di Castello. The figure of Justice is carved on the lunette of the minor door. The façade has a rustic ashlar surface, consisting of ashlars of sandstone, a ductile and soft stone present in the high Tiber hills. Imposing and severe is the atrium where two mighty octagonal pillars support the large roof. From the capitals there are rectangular ribs and round crossed ribs. Through the wide sixteenth-century staircase you reach the Municipal Council Hall where you can see fragments of frescoes and numerous Roman epigraphs that are a precious testimony of the life of the ancient town hall of Tifernum Tiberinum. The room also houses the imposing plaster statue depicting the Allegory of Umbria by the local sculptor Elmo Palazzi (1871-1915). In the adjoining Sala Giunta, in addition to some Garibaldian relics, there is the canvas with the Martyrdom of San Lorenzo, the work of the Tifernate painter Vincenzo Barboni (1802-1859).