Llandaff Cathedral is 3 miles from the city center in a quiet area. It was founded by St. Teilo in the sixth century, but the current building began to be built since 1107. In 1734, began the first of restorations that were to follow, the latter immediately after World War II. Under the altar is the tomb of its founder, St. Teilo. In 2010 the cathedral has been in use a new organ, the largest organ of any brand new church in the UK.