Study the collections at San Isidro Basilica, Museo de Arte Contemporáneo de Castilla y León, or León Museum. Convento de San Marcos, Murallas de León, and Castrillo de Polvazares are monuments to see when you're exploring the area around MUSAC. Castile & León Museum. Take in some of the local culture at León Auditorium, Royal Pantheon, and Museo Catedralicio Diocesano.