The patron of Rassa is the Holy Cross (Santa Croce), celebrated on 3 May, to whom the Chiesa parrocchiale di Santa Croce is dedicated; co-patron is Saint Joseph, celebrated however on the second Sunday of August.
The small municipality also holds the Chiesa di San Pietro in Vincoli, the Chiesa della Visitazione, the Chiesa della Madonna di Loreto and the Antica Segheria Resga di Brasei (old Resga sawmill of Brasei); among its peaks is the Punta Sivella.
