Damage was done to the roof and drainage, causing leaks inside the bandstand.
The vandals broke drainpipes which caused a leak from the roof.
Graffiti and ant-climb paint was found 'smeared' on newly painted walls and doors.
Hinckley and Bosworth Borough Council said the work was done in anticipation of the return of public concerts and entertainment
They have issued an appeal to find the culprits.
Last week police confirmed they would be undertaking 'proactive patrols' around Hinckley's parks due to large groups of teenagers fighting.
Eligible families will get free winter holiday clubs for children in Leicestershire
Poppy memorial handmade by local community unveiled at Bosworth Battlefield Heritage Centre
Planning application for new industrial park just off Junction 22 of the M1 submitted
State-of-the-art endoscopy unit at Leicester General Hospital welcomes first patients
Essential repair work taking place at Nuneaton Cemetery
Appeal for information following serious collision in Kirby Muxloe
