County Londonderry, also known as Derry, is one of the six counties that make up Northern Ireland. It is located in the northwest part of the country and is known for its rich history and stunning landscapes, including the Sperrin Mountains and the River Foyle. The county's largest city, Derry, is famous for its well-preserved city walls and vibrant cultural scene. The county has a diverse population and is home to several towns and villages, such as Coleraine and Limavady. It features a mix of urban and rural areas, offering various recreational activities, including hiking and water sports. County Londonderry is also known for its historical sites, including ancient castles and monuments.