The document provides information about Durham Cathedral and Castle. It describes the cathedral as a house of prayer for 900 years that overlooks the River Wear and contains the remains of St. Cuthbert and Bede. It notes that the cathedral and castle have been a UNESCO World Heritage Site since 2007 and are a popular tourist attraction. It also gives brief histories of Durham Castle, how Durham became a World Heritage Site, and venerable figures from the cathedral's past like Bede and Cuthbert.