One sure sign that fall has arrived in Lisbon is the appearance of the roast chestnut vendors. As the holiday season approaches, they only become more popular. If the air is crisp enough, it is not uncommon for the Baixa area of Lisbon to be filled with smoke and steam from the roast chestnuts. The typical setup is a metal cart, as seen below, but there are some other nifty arrangements where the chestnut roaster is attached to the front of a motorcycle. For about 2€ you can get about a dozen chestnuts. The chestnuts are completely charred and perfect for staving off the winter chill, definitely a must-do for anyone visiting Lisbon in the colder months.