From January to April 1931, Prince George and his elder brother the Prince of Wales travelled 18,000 miles on a tour of South America. Their outward voyage was on the ocean liner . In Buenos Aires they opened a British Empire Exhibition. They continued from Río de la Plata to Rio de Janeiro on the liner and returned from Brazil to Europe on the liner , landing at Lisbon. The princes returned via Paris and an Imperial Airways flight from Paris–Le Bourget Airport that landed specially in Windsor Great Park.