The South Park episode "Royal Pudding" parodies a wedding that took place in what city?
Royal Pudding:  In the episode, which parodies the 2011 Wedding of Prince William and Catherine Middleton, the Prince of Canada's fiancee is abducted from their wedding altar, leading Ike Broflovski to answer the call to rescue her. Wedding of Prince William and Catherine Middleton: The wedding of Prince William, Duke of Cambridge, and Catherine Middleton took place on 29 April 2011 at Westminster Abbey in London, United Kingdom.
London