 Some of the most impressive secular buildings are the amphitheatres, over 200 being known and many of which are well preserved, such as that at Arles, as well as its progenitor, the Colosseum in Rome.They were used for gladiatorial contests, public displays, public meetings and bullfights, the tradition of which still survives in Spain.Their typical shape, functions and name distinguish them from Roman theatres, which are more or less semicircular in shape; from the circuses (akin to hippodromes) whose much longer circuits were designed mainly for horse or chariot racing events; and from the smaller stadia, which were primarily designed for athletics and footraces.