Riviera is a new municipality in the district of Riviera in the canton of Ticino in Switzerland. The municipalities of Osogna, Lodrino, Iragna and Cr…Riviera is a new municipality in the district of Riviera in the canton of Ticino in Switzerland. The municipalities of Osogna, Lodrino, Iragna and Cresciano merged on April 2, 2017.