Lewis is the northern part of Lewis and Harris, the largest island of the Western Isles or Outer Hebrides . The total area of Lewis is 683sqmi. Lewis is, in general, the lower-lying part of the island: the other part, Harris, is more mountainous. Due to its flatter, more fertile land, Lewis contains three-quarters of the population of the Western Isles, and the largest settlement, Stornoway. The island's diverse habitats are home to an assortment of flora and fauna, such as the golden eagle, red deer and seal, and are recognised in a number of conservation areas. Lewis has a Presbyterian tradition and a rich history. It was once part of the Norse Kingdom of Mann and the Isles. Today, life is very different from elsewhere in Scotland, with Sabbath observance, the Gaelic language and peat cutting retaining more importance than elsewhere. Lewis has a rich cultural heritage as can be seen from its myths and legends as well as the local literary and musical traditions.