Designed by Frederick Law Olmsted, landscape architect for New York City's Central Park, Biltmore Estate in North Carolina, as well as numerous other US Parks and college campuses, he was also responsible for preserving Yosemite Valley in California. More information on World's End can be found on The Trustees of Reservations: World's End, Hingham MA, where you can also read about how the Trustees have protected the property since 1891.
p.s. Note: If you plan to visit World's End in Hingham, MA and you rely on a GPS to help with directions, it is best to enter the specific address -- 250 Martin's Lane, Hingham, MA -- that will work. Entering just "World's End" will put you in the next town over, Hull, and driving in circles around a neighborhood! I know... but we tend to get driving off and I have to set the destination fast!