Duke of York and not accessible by the public. The Royal Chapel of All Saints The Royal Chapel of All Saints was built after the chapels of the Royal and Cumberland Lodges proved too small for growing numbers of household staff. The chapel was built in 1825 by Jeffry Wyattville and regularly used by George IV during the refurbishment of Windsor Castle. It was later remodelled in the Gothic Revival style by Samuel Sanders Teulon and Anthony Salvin. Queen Victoria often attended the chapel as did the Duke and Duchess of York before their accession as King George VI and Queen Elizabeth. It was regularly used by Queen Elizabeth II when she was in residence at Windsor. Cumberland Lodge Other notable buildings in the park include Cumberland Lodge, built in 1652 during the Commonwealth. After the restoration of the monarchy in 1660 the Lodge quickly became the home of the Ranger of the Great Park, an office in the gift of the sovereign. Each Ranger made his – or in one case, that of Sarah Churchill, Duchess of Marlborough, her – own mark on the features of the house and its surroundings. Throughout her life Queen Victoria was a frequent visitor. Her daughter Princess Helena of the United Kingdom lived at the Lodge for over fifty years, presiding over elaborate re-building after a major fire in 1869 and extensive alterations in 1912. Lord FitzAlan, last British Viceroy of Ireland, was the last private person to be entrusted with the Lodge. It was in his time, in 1936, that the Prime Minister, Stanley Baldwin, discussed the crisis over King Edward VIII's desire to marry Wallis Simpson, talks which led to his abdication of the crown a few weeks later. In 1947, the King made the Lodge available to the newly established St. Catharine's Foundation, later known as the King George VI and Queen Elizabeth Foundation of St Catharine's. Today the organisation is simply known as Cumberland Lodge. Cumberland Lodge today is an educational charity dedicated to initiating fresh debate on questions facing society. The grounds are not generally open to the public, but the house is continually holding conferences, open days and lectures. Cranbourne Tower The private Cranbourne Tower is easily viewed from surrounding paths. It is all that survives of Cranbourne Lodge, the residence of the Keeper of Cranbourne Chase. It is thought to date back to the 16th century.