Tower Atop the mound are two medieval chapels, one from the 12th Century and the other from the 16th Century. This building complex has been altered a great deal through its history – including being engulfed for a period by the Prince’s Tower. Construction of this tower was started in 1792 by Philippe d'Auvergne, who justified the work by erecting a signal station on the tower as the hub of an island-wide communication system. The building was demolished in 1924. Second World War During the Second World War, it was used as a key lookout point, and an underground command bunker was built in the mound and adjacent. This structure is open to the public, and houses an exhibition commemorating the workers from across Europe forced to build defences in Jersey during the German occupation. Museum The site, which is managed by Jersey Heritage, also houses the island's Archeology and Geology Museum. In that section, there is a display dedicated to the Jersey Mummy. See also Archaeology of the Channel Islands Jersey Dolmens Tumulus References Further reading Nash, G.H. 1997. Experiencing Space and Symmetry: The Use, Destruction and Abandonment of La Hougue Bie Neolithic Passage Grave, Jersey in G.H. Nash (ed.) Semiotics and Landscape: The Archaeology of Mind. Oxford: BAR International Series 661. 105–118. Nash, G.H. 1998. Fourth interim report on the facade area of La Hougue Bie Passage Grave, Jersey. Société Jersiaise Journal. Vol. 27. pt. 2. 317–330. Nash, G.H. 1999. Fifth interim report on the facade and entrance areas of La Hougue Bie Passage Grave, Jersey. Société Jersiaise Journal. Vol. 28, pt. 3. 491–509. The Archaeology of the Channel Islands. Vol. 2: The Bailiwick of Jersey by Jacquetta Hawkes (1939) The Prehistoric Foundations of Europe to the Mycenean Age, 1940, C. F. C. Hawkes The Archaeology and Early History of the Channel Islands, Heather Sebire, 2005. Dolmens of Jersey: A Guide, James Hibbs (1988). A Guide to The Dolmens of Jersey, Peter Hunt, Société Jersiaise, 1998. La Hougue Bie, Jersey – A Study of the Neolithic Tomb, Medieval Chapel and Prince's Tower, Including an Account of the 1991–94 Excavations., Mark Patton, Warwick Rodwell, Olga Finch, 1999. . The Channel Islands, An Archaeological Guide, David Johnston, 1981 The Archaeology of the Channel Islands, Peter Johnston, 1986 External links La Hougue Bie Museum History of Jersey Museums in Jersey Archaeological sites in Jersey Grouville Megalithic monuments in Europe Buildings and