New Delhi, July 5 -- Venice's new mayor is proposing a dynamic pricing system for the city's three-year-old day-tripper access fee, seeking government approval to raise the charge to as much as 50 euros ($59) on the busiest days to ease overcrowding in the UNESCO world heritage city.

Mayor Simone Venturini told The Associated Press in an interview Friday that the current 10-euro fee for last-minute reservations has not done enough to discourage visitors on peak days. Instead of imposing a fixed higher fee, the city wants to enact a form of surge-pricing, allowing the charge to rise with demand on the busiest days.

Venturini said the system would both discourage overcrowding and help cover the costs of maintaining the city.

"We spend 10...