The Prince Of Wales And Duchess Of Cornwall Mark 150th Anniversary Of London Underground

LONDON, ENGLAND - JANUARY 30: Prince Charles, Prince of Wales (centre L) and Kevin Kelly (centre R), General Manager of St Pancras Renaissance London Hotel admire the architecture of St Pancras International Station during a visit to St Pancras Renaissance London Hotel, adjacent to St Pancras International Station, on January 30, 2013 in London, England. The Prince of Wales and The Duchess of Cornwall are marking the 150th anniversary of London Underground to emphasise the importance of engineering and infrastructure development in the UK. (Photo by Oli Scarff - WPA Pool/Getty Images)