The patron of Casina is Saint Bartholomew the Apostle, celebrated on 24 August in the Church of San Bartolomeo Apostolo.
Various feasts and fairs used to ease the townspeople's hard work: at Sarzano there was a fair on Whit Tuesday, at Pianzo on the Sunday after Saint Peter's and on Trinity Sunday, at Leguigno for Saint Anne, at Paullo on 20 August. The town also holds the Castello di Sarzano and the Castello di Leguigno.