Chapel Royal
The chapel was designed by Francis Johnston and contains one of the finest Gothic revival interiors in Ireland. It was built to replace an earlier 18th century church that suffered structural problems due to being built on soft ground close to the site of the original castle moat. The new Chapel Royal was built using a timber frame to make it as light as possible, but still it took seven years to build due to the difficulties relating to the site and also because of the "sheer opulence" of the interior.