Besides the sites inside L'Aquila, there are many places to visit outside of the city including the churches of San Pelligrino and Santa Maria dell'Assunta in Bominaco, the medieval castle at Calascio, and the Gran Sasso National Park. In wintertime, Because of the nearby mountains there are several ski resorts throughout the region. Many of these skiers stay in LâAquila which, could cause problems finding a hotel room in the winter season.