CMAC, the Constellation Brands-Marvin Sands Performing Arts Center, is Canandaigua's big summer stage. It draws touring acts that would otherwise bypass a city this size, with covered seats and a large lawn on the Finger Lakes Community College campus.
It is not a sight in the daytime sense, but it can make a Canandaigua overnight much more interesting. Check the calendar before you plan a summer visit.