South of Piaţa Mare, Str Cetăţii lines a section of the old city walls, constructed during the 16th century. As in Braşov, different guilds protected each of the 39 towers. Walk north up Str Cetăţii past a couple - the Potters Tower (Turnul Olarilor) and Carpenters Tower (Turnul Dulgherilor) - to reach the Natural History Museum , an average collection of stuffed animals that dates from 1849.