Bridgnorth Castle: The remains of Bridgnoth Castle are set on a cliff by the side of the River Severn. Today the castle is little more than a ruin, comprising of a 70 foot tall, 12th century Norman tower and some other small stonework built in the time of Henry II. The tower leans at an alarming angle of 15 degrees, three times greater than that of the leaning tower of Pisa. This is due to an attempt to blow it up during the Civil War.