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Historic Site, Isles Of Scilly
Address: Palace Lane, Tresco, Isles Of Scilly, TR24 0QL
Web: http://www.english-heritage.org.uk/server/show/nav.001001001013001006002
Standing on a rocky promontory guarding the lovely anchorage between Bryher and Tresco, this round tower is one of the few surviving Cromwellian fortifications in Britain, built after the conquest of the Royalist Scillies in 1651.