The Hill of Slane rises 158m above the surrounding countryside and at the top a well-preserved tower dating back to 1512 on the ruins of a Franciscan monastery founded by St. Erc, a follower of St. Patrick. The Barons of Slane from the 11th to 17th
Centuries built the college and homes. King Henry VIII dissolved the monastery until the Flemings could restore it in 1631. Capuchin monks made their home here until 1651 when Oliver Cromell drove them out.