IMB4858375 Martello towers (Tours martello), watch and guard towers from the 17th century found along the coastline, here Tower No. 5 at Pembroke Bay in the northeast of Guernsey (Guernsey), Channel Islands (Channel Islands); (add.info.: Martello towers (Tours martello), watch and guard towers from the 17th century found along the coastline, here Tower No. 5 at Pembroke Bay in the northeast of Guernsey (Guernsey), Channel Islands (Channel Islands)); 穢 Imagebroker.