Calton Hill is the headquarters of the Scottish Government, which is based at St Andrew's House, on the steep southern slope of the hill. The Scottish Parliament Building and other prominent buildings such as Holyrood Palace lie near the foot of the hill. Calton Hill is also the location of several monuments and buildings: the National Monument, the Nelson Monument, the Dugald Stewart Monument, the old Royal High School, the Robert Burns Monument, the Political Martyrs' Monument and the City Observatory.