Calders Winter Main Festival Activity · Calders, Moianès, Barcelona Image of Calders, not of the place itself. The Festa Major d'Hivern de Calders is held beside the stream that crosses the south of the Moianès between Calders and Monistrol de Calders, in a municipality that preserves an old lime kiln, a testimony to its pre-industrial craft activity. Photo: Luz Pulpeiro (CC BY-SA 4.0) What to see and do in Calders