Located on the bank of the River Primero, Córdoba has preserved much of its colonial past and character. Some of the most interesting colonial buildings include El Cabildo (the Town Hall) and the Casa del Obispo Mercadillo. One of the best streets in which to see colonial buildings is the Calle Obispo Trejos. Also worth seeing are the churches of the Compañía de Jésus, San Francisco and San Roque. Argentina’s first university, the Universidad Nacional de Córdoba was founded here. The scenic mountain hinterland known as the Sierras de Córdoba is dotted with colonial hermitages and tourist towns: Cosquín hosts an annual folklore festival and la Falda is a popular resort for excursions to the Sierra Chica. Around Córdoba, numerous Jesuit churches can be visited: Alta Gracia, 35km (22 miles) southwest of the city, is one of the best known. Also of interest is the town of Jesús María, which hosts the Fiesta Nacional de Doma y Folklore, an annual celebration of gaucho horsemanship and customs.