The chapel is based on the famous grotto and basilica at Lourdes
One of Guernsey's most popular tourist attractions will remain open despite recent vandalism.
Stained glass windows broken at the Little Chapel, in St Andrew, will cost more than £3,000 to repair.
Blanchelande Girls College is responsible for its upkeep and its head teacher said she was saddened, but not surprised by the attack.
Lesley Le Page said she could not imagine closing the chapel to the public at any time.
She said: "We've got an ongoing responsibility and one that we love to have, but an ongoing responsibility to look after the chapel.
"It's very sad to see it happen but we certainly wouldn't let it stop us keeping the chapel there, open and free for everyone to enjoy."
The Little Chapel is one of the smallest chapels in the world, measuring about 17ft (5.2m) by 11ft (3.4m) with a 14ft (4.3m) steeple.
It was the third small chapel built on the site by Brother Deodat from the Brothers of the Christian Schools, a religious fraternity of men devoted to the education of boys.
Brother Deodat's attempt to create a miniature version of the famous grotto and basilica at Lourdes, France, is decorated with seashells, pebbles and colourful pieces of broken china.