Forty miles (64km) north of New York City is Tarrytown, known to Washington Irving fans as Sleepy Hollow, setting for the Legend of Sleepy Hollow. The town is packed with historic homes including the impressive Rockefeller residence; Irving's home can also be visited. Over of the east bank of the river is Hyde Park, where President Franklin D Roosevelt was born and spent much of his adult life. The Franklin D Roosevelt Home and Library contains hundreds of photos and artefacts, including the specially made car he drove after being struck with polio in 1921, and the letter from Einstein that led to the development of the atomic bomb. Two miles (3km) outside Hyde Park is the Vanderbilt Mansion National Historic Site - a spectacular Beaux Arts mansion. A day in Tarrytown is a popular excursion from New York City.