Police detectives are investigating a series of criminal damage incidents at St Michaels Abbey in Farnborough.
Between Wednesday May 6 and Friday May 8, a group of youths accessed the estate, in Farnborough Road, during the evenings and threw bricks at the historic stained glass windows and oak doors.
The group also chased sheep around the fields, causing some of the pregnant ewes to miscarry their lambs.
PC Dave Carpenter, from the Farnborough Neighbourhood Policing Team, said: “The incidents have impacted on the monks’ quality of life as they have not been able to sleep due to how distressing the incidents have been.
"I would urge that anyone with any information about these incidents to please contact me."
Farnborough Abbey was previously broken into in February 2014, when 'irreplacable' altar cards were stolen from the tomb of a prince in the crypt. The three cards were never recovered.
Anyone with any information on the recent vandalism is asked to contact PC Carpenter on 101, quoting reference 44150155970, or call Crimestoppers charity anonymously on 0800 555111.