 The nondenominational St Tugual 's Chapel dates to the 11th century , but it is believed that there was a place of worship on Herm as far back as the 6th century , although it hasn 't been confirmed whether the chapel was founded by St Tugual himself or his followers at a later date . The current building is Norman and appears to have been a monastery during medieval times . Of particular note is its stained glass windows featuring Noah 's Ark and Guernsey cows and Jesus talking to the fisherman at Herm harbour . In 2010 and 2011 , the chapel was closed for restoration work . 
