The Calbotada of Rozas Activity · Rozas de Puerto Real, Sierra Oeste, Madrid Image of Rozas de Puerto Real, not of the place itself. Every 1 November the villagers roast chestnuts in their doorways, at the height of autumn in the largest chestnut wood in Madrid; the calbotes that give the festival its name are served alongside local dishes such as callos a la roceña. Photo: Totemkin (CC BY-SA 3.0) What to see and do in Rozas de Puerto Real