Riverside Park: view from Claremont Playground, where the lanes of Riverside drive split to go around the "island" containing the playground and Grant's Tomb. Where they lanes join here, Riverside Drive becomes a viaduct over the valley at 125th street, that touches down on land again at 135th Street. In the distance: the fairly recent sewage treatment plant that has a State Park on its roof, and beyond it the GW Bridge.