The village is remarkably well preserved and has proved to be the best-preserved Neolithic village in western Europe.
It is around 5,000 years old, pre-dating Stonehenge and the Egyptian pyramids.
Today Skara Brae survives as eight dwellings, linked together by a series of low, covered passages.
A replica construction lets visitors see how the interior of a prehistoric house looked.
In 1999 the village was inscribed on to the World Heritage List as part of the Heart of Neolithic Orkney World Heritage Site.