TUI AG is a tour and travel company, which engages in the provision of tour, hotel and resort, and cruise services. It operates through the following segments: Northern Region, Central Region, and Western Region. The Northern Region segment includes tour operators, airlines and cruise business in the UK, Ireland and the Nordics. The Central Region segment comprises of the tour operators and airlines in Germany and the tour operators in Austria, Switzerland and Poland. The Western Region segment encompasses tour operators and airlines in Belgium and the Netherlands and the tour operators in France. The company was founded in 1923 and is headquartered in Hannover, Germany.