Every village in Portugal has a 'Castanhas and Jeropiga' session in November or thereabouts, courtesy the local council. This photo is from my village last year.
'Castanhas' are chestnuts, and 'jeropiga' is the local fortified wine, a bit like Port, generally served from used two litre plastic water bottles as far as I can tell. The coca cola and orange stuff was because my son isn't 16 yet so isn't officially allowed the jeropiga. For the bigger villages, the chestnuts are cooked in the village square using fires lit on the cobble stones, but last year our village had shrunk enough to make it not really worthwhile and the chestnuts were delivered ready-cooked in that giant lidded saucepan thing.
The little building they are gathered in front of is the community oven, complete with official notice board, and the other building is part of the village olive press.
Just thought I'd share...