Wales' landscape, history and culture attract tourists. The scars of the industrial revolution can still be seen on parts of the Welsh landscape today, and many other places of historical interest attract large numbers of tourists: for example the many castles, such as Caernarfon Castle and Caerphilly Castle — most of them built during the reign of King Edward I. Wales’ National Parks also attract many visitors. In addition to landscape and history, Wales produces superb smallgoods and dairy products as well as wonderful ales. Eating and dining are a joy, rugby is an obsession, and music and literature can be found everywhere.