The national museum of Castel S. Angelo opens its doors to the public on summer evenings until 9 September, with free guided tours in Italian, English, French and Spanish. Tours include areas usually closed to the public such as the Passetto di Borgo, an 800m-long escape tunnel linking the former papal fortress to the Vatican; prisons used from Renaissance times up to the 19th century; while those curious to know what a 16th-century pope’s bathroom looked like can check out the Stufetta di Clement VII. In addition to the guided tours there are free concerts of classical music, opera, pop and jazz on Wednesdays, Fridays, Saturdays and Sundays at 21.30, from 11 July. Visitors can also avail of a bar and restaurant with panoramic views of the capital. For the duration of the initiative, Castel S. Angelo is open daily from 20.30 until 01.00. Tickets cost €10.00, children under 10 go free, and the ticket office is open until midnight. For information tel. 0688522480 (Mon-Fri 10.00-18.00 / Sat-Sun 15.00-18.00) www.nottiacastelsantangelo.it