Papa Westray, or 'Papay', as it is known locally, is located across the Papa Sound from Westray in the north of the Orkney Isles.
Papay was once a medieval pilgrimage centre, focused on a chapel dedicated to St Tredwell, which is now just a pile of rubble on a promontory on the loch of the same name just inland from the ferry terminal. Holland House, occupying the high central point of the island, was once seat of the local lairds, the Traill family, who ruled over Papay for three centuries. There is a small museum here, filled with bygone bits and bobs.
Papa Westray's prime prehistoric site, the Knap of Howar, stands overlooking Westray. Dating from around 3500 BC, this Neolithic farm building makes a fair claim to being the oldest-standing house in Europe. Half a mile to the north is St Boniface Kirk, a pre-Reformation church that has recently been restored. In the surrounding graveyard there's a Viking hogback grave, decorated with carvings in imitation of the wooden shingles on the roof of a Viking longhouse.
Please check http://westraypapawestray.co.uk/papa-westray/ or http://www.papawestray.co.uk/ for more information on Papa Westray.