A manor house and small associated village were located on the slight ridge overlooking the sea where the Clontarf Castle Hotel is now situated. The manor house was rebuilt many times, with the current hotel dating largely to the early 19th century. The tower house on the site is a 19th-century replica of the original Templar structure on the site. The adjoining ruined church is the old Church of Ireland parish church, dates to the mid-17th century and includes what may be the earliest use of red brick in Ireland.