Cadw is the Welsh Governments historic environment service working for an accessible and well-protected historic environment for Wales. For nearly 1000 years the mighty Castles and Monuments of Wales have added to our landscape, and captured our history. Discover Wales rich history and heritage by visiting over 100 castles, abbeys, forts and burial chambers. Sign up to be members of Cadws Tour Operator Scheme or qualify for preferential trade rates for Explorer Passes