To find the Greenbelt Office in Blydenburgh Park: from Route 25-25A in Smithtown, go south on Brooksite Dr.; at next light (New Mill Rd.), turn right to park entrance at end of road. From Route 347, find Brooksite Dr. between the 347-454 junction and Rt. 111; head north on Brooksite to New Mill Rd.; go left to the park. Follow the paved path at the west end of the lot to the Blydenburgh-Weld House.