County Meath (Irish: Contae na Mí) is often informally called The Royal County. The county town is Navan, where the county hall and government are located, although Trim, the former county town, has historical significance and remains a sitting place of the circuit court. Trim contains Ireland's largest Norman castle and was the setting for many Norman-Irish parliaments. Meath is also home to Kells, with its round tower and monastic past, and Slane, known for its castle and annual rock concert and the Ledwidge Cottage Museum.