What are some popular attractions on Orkney Mainland?

On Orkney Mainland, some popular attractions include the red sandstone cliffs of Yesnaby, the Neolithic settlement of Skara Brae, The Kitchener Memorial, and the Brough of Birsay where Norse and Pictish ruins can be found. Additionally, the Heart of Neolithic Orkney, Pictish and Viking heritage, abundant wildlife, and the St. Magnus Way are also top attractions.