Past Hyde Park, the road narrows to two lanes again as traffic becomes more local. The area recalls Westchester County with many wooded tracts and stone walls at roadside. Through here it has been running fairly close to the river, but after Staatsburg the highway begins to veer inland again. The land to the west, between road and river, forms the Hudson River Historic District, the largest in the country and another National Historic Landmark. US 9 is at least east of the river when it reaches Rhinebeck, the next town along the route, where NY 308 heads off to the east, and close to the Old Rhinebeck Aerodrome aviation museum.