Inside the deconsecrated 14th-century church and convent of Santa Caterina dei Servi di Maria, this museum holds the city's archaeological collection alongside its most important medieval frescoes. The cycle of the Life of St Ursula by Tommaso da Modena was moved here from a destroyed church and reassembled across an entire wall.
The cloister and surviving church spaces form one of the better-preserved late-medieval interiors in Treviso. Entry is included on the same ticket as the Museo Bailo.