wikipedia: Látrabjarg, in Iceland, marks the western-most part of Europe (excluding some of the Azores islands). The cliffs are home to millions of birds, including puffins, northern gannets, guillemots and razorbills. It is vital for their survival as it hosts up to 40% of the world population for some species e.g. the Razorbill. It is Europe's largest bird cliff, 25 miles long and up to 1450 feet high.