Butlin's is a chain of large seaside resorts in the United Kingdom. Butlin's was founded by Billy Butlin to provide affordable holidays for ordinary British families. Between 1936 and 1966, ten camps were built, including one in Ireland and one in the Bahamas. In the 1970s and 1980s, Butlin's also operated numerous large hotels, including one in Spain, a number of smaller holiday parks in England and France, and a revolving restaurant in the Post Office Tower in London.