Rome could soon launch a ticketing system to enter one of its most iconic sites. Authorities in the Italian capital say they want to start the scheme at the Trevi Fountain as part of ongoing plans to both reduce crowds and promote “sustainable tourism”. The 18th-century fountain has long been a ‘must visit’ for tourists to the Eternal City, but it is frequently overcrowded and rife with pickpockets. “Personally I would be in favour of looking at a new form of access, limited and timed, to the Trevi Fountain,” Alessandro Onorato, Rome’s city councillor responsible for tourism, told Italian news…