or bailey called the Cockpit, which may have functioned as a garden and was overlooked by a balcony. A drawing of 1674 suggests there was another longer balcony overlooking the river side of Scolland's Hall, the great hall. Richmond Castle had fallen out of use as a fortress by the end of the 14th century and it did not receive major improvements after that date. A survey of 1538 shows it was partly in ruins, but paintings by Turner and others, together with the rise of tourism and an interest in antiquities, led to repairs to the keep in the early 19th century. In 1855 the castle became the headquarters of the North Yorkshire Militia, and a military barracks block was constructed in the great courtyard. For two years, from 1908 to 1910, the castle was the home of Robert Baden-Powell, later founder of the Boy Scouts, while he commanded the Northern Territorial Army but the barracks building was demolished in 1931. The castle was used during the First World War as the base of the Non-Combatant Corps made up of conscientious objectors – conscripts who refused to fight. It was also used to imprison some conscientious objectors who refused to accept army discipline and participate in the war in any way. These included the "Richmond Sixteen" who were taken to France from the castle, charged under Field Regulations, and then sentenced to death, but their death sentences were commuted to ten years' hard labour. The original 11th-century main gate arch is now in the basement of the later 12th century keep which was built in front of it; the original arch was unblocked in the 19th century. The castle is a scheduled monument, a "nationally important" historic building and archaeological site which has been given protection against unauthorised change. It is also a Grade I listed building. According to legend, King Arthur and his knights are sleeping in a cave underneath the castle. It is said that they were once discovered by a potter named Thompson, who ran away when they began to awake. Another legend tells that a drummer boy was lost while investigating a tunnel, and that his ghostly drumming is sometimes heard around the castle. Graffiti The cell block at the castle contains 2,300 examples of graffiti left by those imprisoned there, from the mid-nineteenth century to the 1970s. Perhaps the most significant of the mark