with 96 businesses in this sector. From the , 1,829 or 86.8% are Roman Catholic, while 58 or 2.8% belonged to the Swiss Reformed Church. Of the rest of the population, there are less than 5 individuals who belong to the Christian Catholic faith, there are 15 individuals (or about 0.71% of the population) who belong to the Orthodox Church, and there are 13 individuals (or about 0.62% of the population) who belong to another Christian church. There are 55 (or about 2.61% of the population) who are Islamic. There are 12 individuals (or about 0.57% of the population) who belong to another church (not listed on the census), 82 (or about 3.89% of the population) belong to no church, are agnostic or atheist, and 44 individuals (or about 2.09% of the population) did not answer the question. The historical population is given in the following table: Heritage sites of national significance The Church of the Madonna del Ponte chiuso is listed as a Swiss heritage site of national significance. Notable residents Lorenzo Sciasca (1643–1694), Baroque architect and builder Antonio Riva (1650–1713), Baroque architect and builder Gabriel de Gabrieli (1671–1747), Baroque architect Giovanni Simonetti (1652–1716), Baroque builder and plasterer Giulio Simonetti (1659–1729), Baroque architect and builder Kaspar Zuccalli (about 1629–1678), Baroque builder Enrico Zuccalli (perhaps Johann Heinrich Zuccalli, 1642–1724), Baroque builder Giovanni Gaspare Zuccalli (about 1667–1717), Baroque builder References External links Official website Cultural property of national significance in Graubünden