The Gran Sasso d'Italia is the highest peak in the Apennine mountain range and rises immediately north of L'Aquila. Its presence defines the city — on clear days the rocky summit ridge is visible from the historic centre, and it gives L'Aquila an alpine character unusual for a central Italian city. A cable car (funivia) from Fonte Cerreto, about 15 kilometres from the city, climbs to the Rifugio Duca degli Abruzzi at around 2,130 metres, providing access to hiking trails and, in winter, a small ski area.
The high plateau of Campo Imperatore, reached before the final climb to the peaks, is a remarkable landscape — a broad flat valley at over 1,400 metres, used for sheep grazing in summer and described as the 'little Tibet of Italy' for its treeless, wind-scoured character. The Laboratori Nazionali del Gran Sasso, deep inside the mountain, are a major particle physics research facility operating in a unique underground setting. The area is part of the Gran Sasso e Monti della Laga National Park.