<P> St Paul's charges for the admission of those people who are sightseers, rather than worshippers; the charge is £ 18 (£ 16 when purchased online). Outside service times, people seeking a quiet place to pray or worship are admitted to St Dunstan's Chapel free of charge . On Sundays people are admitted only for services and concerts and there is no sightseeing . The charge to sightseers is made because St Paul's receives little regular or significant funding from the Crown, the Church of England or the state and relies on the income generated by tourism to allow the building to continue to function as a centre for Christian worship, as well as to cover general maintenance and repair work . </P> <P> The St Paul's Cathedral Arts Project explores art and faith . Projects have included installations by Gerry Judah, Antony Gormley, Rebecca Horn, Yoko Ono and Martin Firrell . </P> <P> In 2014, St Paul's commissioned Gerry Judah to create an artwork in the nave to commemorate the 100th anniversary of the beginning of the First World War . Two spectacular sculptures consisting of three - dimensional white cruciforms reflect the meticulously maintained war graves of northern France and further afield . Each sculpture is also embellished with miniaturised destroyed residential blocks depicting war zones in the Middle East--Syria, Baghdad, Afghanistan--thus connecting 100 years of warfare . </P> <P> Bill Viola has created two altarpieces for permanent display in St Paul's Cathedral . The project commenced production in mid-2009 . Following the extensive programme of cleaning and repair of the interior of St Paul's, completed in 2005, He was commissioned to create two altarpieces on the themes of Mary and Martyrs . These two multi-screen video installations are permanently located at the end of the Quire aisles, flanking the High Altar of the cathedral and the American Memorial Chapel . Each work employs an arrangement of multiple plasma screen panels configured in a manner similar to historic altarpieces . </P>

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