Great Cumbrae (additionally called Great Cumbrae Island, Cumbrae or the Isle of Cumbrae) is the bigger of the two islands called The Cumbraes in the lower Firth of Clyde in western Scotland. House to the National Watersports Centre, the Cathedral of the Isles as well as the University Marine Biological Station, Millport, the holiday island has an 18-hole golf course which brushes up nearly to the top, and a round-island road much favoured for family cycle runs. The island is roughly 4 kilometres (2.5 mi) long by 2 kilometres (1.2 mi) broad, rising to an elevation of 127 metres (417 ft) above sea level at "The Glaid Stone" - a large, naturally happening rock set down on the highest top on the island. There is a triangulation pillar close by, along with an alignment factor which suggests the locations of surrounding landmarks. Millport, the island's only town, is spread around a bay which makes up the whole south coast of the island. The typical island population of 1,376 as recorded by the 2011 census was a small loss from the 2001 number of 1,434. The population enhances significantly during the summer season traveler season due to the high proportion of second residences.