There are 37 Grade I listed buildings in North Somerset, including the Clifton Suspension Bridge (pictured), which joins North Somerset to Bristol, and Clevedon Pier. North Somerset is a unitary authority in the ceremonial county of Somerset, England. In the United Kingdom, the term listed building refers to a building or other structure officially designated as being of special architectural, historical or cultural significance; Grade I structures are those considered to be "buildings of exceptional interest". Of the listed buildings, manor houses include Clevedon Court, built in the 14th century, and from the 15th century, Ashton Court and Nailsea Court. Somerset has many religious structures; the largest number are from the Norman or medieval eras. Some of the churches are included in the Somerset towers, a collection of distinctive, mostly spireless Gothic church towers. (Full list...)