In the 1760s George III moved some of his day-to-day horses and carriages to the grounds of Buckingham House, which he had acquired in 1762 for his wife's use, but the main royal stables housing the ceremonial coaches and their horses remained at the King's Mews. However, when his son George IV had Buckingham Palace converted into the main royal residence in the 1820s the whole stables establishment was moved. The old Mews at Charing Cross was demolished and Trafalgar Square was laid out on the site in 1837–1844. The current Royal Mews was built to designs by John Nash and were completed in 1825 (though the Riding School, thought to be by William Chambers, dates from the 1760s). The buildings have been modified extensively since.