Wintry weather has forced authorities to close a 14th Century access gate to gardens in Bury St Edmunds because masonry is crumbling.
The historic Abbey Gate has been temporarily closed but the gardens remain open during the usual hours and can be reached through other entrances.
Pieces of stone have fallen from one wall and the area has been fenced off.
"After discussions with an engineer, council staff extended the cordoned area on Thursday," a spokesman said.
"It has now been decided to close the gate, due to concerns that netting across the top may not be strong enough to catch masonry," he said.
Early in the New Year a scaffolding tunnel will be created so the Abbey Gate can be reopened to allow public access through it again before repairs are made.