The Gran Sasso and Monti della Laga National Park is a natural park in Italy, which was established in 1991. It has an area of 2,014 square kilometres. The terrain is predominantly mountainous. It is managed by Ente Parco Nazionale Gran Sasso e Monti della Laga, with headquarters in Assergi, in the Province of L'Aquila. The Grand Highway of the Gran Sasso and Monti della Laga National Park runs through the park between the Gran Sasso mountain peak and the chain known as Monti della Laga.