Venice launched a new scheme Thursday to charge day-trippers for entering the historic Italian city, a world first intended to ease the pressure of mass tourism — but many residents are opposed.

Visitors entering the UNESCO World Heritage site for the day have to buy a five-euro ($5.3) ticket, with inspectors carrying out spot checks at key entry points.

Around 10,000 tickets had been sold by the time the scheme began at 8:30 am (0630 GMT) on Thursday, according to Simone Venturini, the local councillor responsible for tourism.

“I think it’s good, because it will perhaps slow down the numbers of tourists in Venice,” said Sylvain Pelerin, a French tourist who has been visiting for more than 50 years.

Overnight visitors, who already pay a tourist tax, will be exempt, as will minors under the age of 14 among others.

But not everyone is happy, with some residents set to protest against a measure they say curbs fundamental rights to freedom of movement.

“This is not a museum, it’s not a protected ecological area, you shouldn’t have to pay — it’s a city,” Marina Dodino from the local residents association ARCI, told AFP.