Which is mainland Europe's most westerly point?

Cape Roca, Portuguese 'Cabo Da Roca', also called 'Focinho Da Rosa', is a promontory in Portugal, and the westernmost point of continental Europe. It lies on the Atlantic coast of Lisboa district, about 25 miles (40 km) west-northwest of Lisbon. Known to the Romans as Promontorium Magnum, the cape is a narrow granite cliff, 472 feet (144 m) high, forming the western end of the Sintra Mountains.

Located at latitude 38º 47´north and longitude 9º 30´west, Cabo da Roca is an important coordinate for those sailing along the coast.

Historical records indicate that there was a fort on Cabo da Roca in the 17th century that played an important part in guarding the entrance to Lisbon’s harbour, forming a defensive line along the coast, especially during the Peninsular Wars. Today there are only traces, as well as the lighthouse which is still an important point for navigation.