Fort Tryon Park—frequently misspelled as Tyron—is a landmarked 67-acre park designed by the Olmsted brothers. John D. Rockefeller, Jr. presented it to the city as a gift in 1935. The most notable horticultural feature is the three-acre Heather Garden, which has year-round interest and panoramic views of the Hudson River. The British named this area of upper Manhattan for Sir William Tryon (1729–1788), the last British governor of colonial New York.