León’s small but modern cinema is in the Plaza Siglo Nuevo shopping center (from the cathedral, one block north, one block east, tel. 505/311-7080). Look for the cartelera (schedule) at shops around the city for show times; tickets cost $4.
El Teatro Municipal José de la Cruz Mena (one block south of the southwest corner of the central park, tel. 505/2311-1788) is the cultural heart of the city, open to the public for half-hour theater tours during the day with all kinds of events at night. Some big-name performers prefer León [1] over Managua [2].
Links:
[1] http://www.moon.com/destinations/nicaragua/northwest-coast/leon
[2] http://www.moon.com/destinations/nicaragua/managua