Via Krupp is a historic switchback paved footpath on the island of Capri, connecting the Charterhouse of San Giacomo and the Gardens of Augustus area with Marina Piccola. Commissioned by German industrialist Friedrich Alfred Krupp, the path covers an elevation difference of about 100 m.
Built between 1900 and 1902, ostensibly Via Krupp was a connection for Krupp between his luxury hotel, Grand Hotel Quisisana, and Marina Piccola, where his marine biology research vessel lay at anchor. Secretly however, this path also conveyed him to Grotta di Fra Felice, a grotto where sex orgies with local youths are supposed to have taken place. When the scandal surfaced, Krupp was asked to leave Italy in 1902.
Since 1976, Via Krupp has been closed most of the time due to the danger of falling rocks.[source]