LONDON, May 2, 2018 (Reuters) - Britain's Prince Harry and his bride-to-be Meghan Markle said on Wednesday they were looking forward to the procession through Windsor following their wedding this month, after choosing an open-top royal carriage for the journey. There are more than 100 carriages in the Royal Mews collection with five Ascot Landaus. Harry travelled in one of them to the wedding of his elder brother William to Kate Middleton in 2011 when he acted as best man. Harry and his US fiancee will ride in an Ascot Landau carriage when they take a tour through the town after the wedding ceremony at Windsor Castle, Queen Elizabeth's home to the west of London, on May 19. The carriage procession will see the couple ride from the castle through Windsor before returning up the Long Walk, a famous, tree-flanked straight promenade that leads to the castle gates.