Viana’s Museu Municipal is housed in the 18th-century Palacete dos Barbosas
Maciéis and has an excellent collection of rare ceramics, furniture,
archaeological finds and paintings. In one of the upstairs rooms, the walls
are tiled with animated allegorical depictions of the continents, while the
chapel is lined with tiles signed by the 18th-century artist Policarpo de
Oliveira Bernardes. Among the exhibits are a 17th-century Indo-Portuguese
cabinet magnificently decorated with inlaid ivory, and pieces of Oporto
faïence from the Massarelos district, embellished with fine brushwork.

Northwest of the centre, the mid-18th century Romanesque chapel of Nossa
Senhora da Agonia houses a statue of Our Lady of Sorrows (agonia ). The chapel, with façade and altar designed by André
Soares, draws enormous crowds for the romaria  of Nossa
Senhora da Agonia, a three-day festival held each year in the month of
August. The statue is carried in procession through the town amid much
feasting and celebration.