Portelet Common in Jersey will now be closed overnight due to anti-social behaviour.
Police say discarded rubbish, broken glass and vandalism have increased in the area lately, as well as disturbance to local residents.
To try and improve this, it will be shut off to the public between 9pm and 5am each night. Anyone breaching this could be fined up to £1,000.
As well as the issues that have been raised at the Common, police also say this has been introduced for safety reasons - as the emergency services would not be able to reach some of the areas being used for parties and gatherings if an incident occurred.