In a Neolithic
chambered cairn near the village, complex carving can be seen on a stone which was probably a lintel. This is thought to originate in the same culture which produced similar carvings at
Newgrange in
County Meath,
Ireland. Pierowall also has an important example of the circular
dry-stone Atlantic roundhouses which date from the
Iron Age. Away to the west are the ruins of
Noltland Castle, built by
Gilbert Balfour in the 16th century, notable for its massive spiral staircase "second only to
Fyvie Castle, while its triple tiers of
gunloops are without parallel in Scotland, if not Europe". The
Lady Kirk, a ruined church built in 1674 on the foundations of an older 13th-century church, is one of two ruined churches on the island of Westray and is a
scheduled monument in the care of
Historic Environment Scotland. Other listed structures include Trenabie Bere Mill and Pierowall Harbour's Gill Pier, which was built in 1870. The Westray Heritage Centre stands at the heart of the village, which also has an art gallery. ==Archaeology==