Mystery envelops Cambridge College, the statues of the building bear the hood of Grandpa
Grandpa hoodies have mysteriously appeared on top of the statue heads of a Cambridge University building.
Photographer Martin Bond, who spotted them, said he believes some "master student" is responsible for placing them on the carved figures in the Gothic-style chapel at St John's College, which is 50 meters high.
"Some people believe they were placed by a drone, but they definitely climbed there," he said.
The Gothic-style chapel at St John's College was built in the 1860s and stands 163ft (50m) high.
Photographs from the city have made an image of Cambridge every day for more than a decade, posting them online under the name "A Cambridge Diary".
He said at least three hats could be seen on top of the statues and gargoyles in the Cambridge University building.
Posting the images on Facebook and Twitter, he said: "Some stupid student has put grandfather hats on the heads of the figures in the St. John's College hat - so why is this my picture of the day?
It is not the first time unusual items are seen on college rooftops.
In November 2009, climbers climbed a 24-foot outer wall of King's College chapel to place four grandfather hats on the edges of the building.
In June 1958, a battered Austin 7 appeared on the roof of the Senate chamber overnight.
Meanwhile, St John's College has been contacted for comment.