The bright, contemporarily designed Museo Arocena , just off the Plaza de Armas, has galleries of Mexican and Spanish art and a local history section, but the best part is the outer walkway on the third level, which traces Mexico’s history through its arts and technology, from the ancient Olmecs to the 1940s golden age of Mexican cinema, with the aid of interactive screens. In front of the museum is an entrance to Canal de la Perla , an underground aqueduct recently rediscovered by accident and sometimes used for exhibitions.
