Tom Tower is a bell tower in Oxford, England, named after its bell, Great Tom. It is over Tom Gate, on St Aldates, the main entrance of Christ Church, Oxford, which leads into Tom Quad. This square tower with an octagonal lantern and facetted ogee dome was designed by Christopher Wren and built 1681–82. The strength of Oxford architectural tradition and Christ Church's connection to its founder, Henry VIII, motivated the decision to complete the gatehouse structure, left unfinished by Cardinal Wolsey at the date of his fall from power in 1529, and which had remained roofless since. Wren made a case for working in a Late Gothic style—that it "ought to be Gothick to agree with the Founders worke"—a style that had not been seen in a prominent building for a hundred and fifty years, making Tom Tower a lonely precursor of the Gothic Revival that got underway in the mid-18th century. Wren never came to supervise the structure as it was being erected by the stonemason he had recommended, Christopher Kempster of Burford. In 1732–34, when William Kent was called upon to make sympathetic reconstruction of the east range of Clock Court in Wolsey's Tudor Hampton Court Palace, he naturally turned to the precedent of Tom Tower for his "central ogee dome with its coronet of pilaster-like gothick finials". The tower of Dunster House at Harvard University is a direct imitation of Tom Tower, though its details have been Georgianised, and stones from Christ Church are installed in one of the house's main entryways. Tom Tower was the inspiration for the Clock Tower (formally the Old Arts Building) at the University of Auckland. Great Tom Great Tom, housed in the tower, is the loudest bell in Oxford. It weighs six and a quarter tons and was moved from the 12th-century Osney Abbey after the Dissolution of the Monasteries. Aside from a student prank in 2002 when the clapper was lagged (enclosed or covered with a material providing insulation), Tom has sounded every night since the Second World War. Originally called "Mary", Great Tom was moved from Osney Abbey to St Frideswide's Priory in 1545, after which at some point it was renamed "Tom". It had caused problems since its first casting, wearing out its clapper, and was recast in 1626 and 1654, but without solving the problem (there is no evidence of a recasting in 1612). In 1678–79,