American R&B recording artist, singer Beyonce Giselle Knowles , who topped the charts with the record last week, cast the album's artwork on a number of the city's landmarks, including Madame Tussauds and Battersea Power Station. The star's fourth studio set entered at number one last Sunday after selling 31,000 copies, and is on course to spend a second week at the chart summit following her well-received performance at this year's Glastonbury festival.