Platinum Jubilee party ends, now the monarchy looks to the future

After four days of parades, street parties and a gala concert celebrating Queen Elizabeth II's 70 years on the throne, the Platinum Jubilee celebrations ended Sunday with a queen's wave from Buckingham Palace and the crowds outside singing 'God Save the Queen.' But as the tributes to Elizabeth's lifetime of service begin to fade, Britain is left with the reality that the second Elizabethan age is in its twilight.