Trenton's manageable scale and proximity to the Delaware River provide many opportunities for exploration on foot or on a bicycle. In good weather, one of the most popular lunch hour walks for office workers is a loop across the Trenton Makes bridge, along the path atop the river levee in Morrisville, Pa., and back across the river into Trenton at the Calhoun Street bridge. This walk is known for its wonderful views of the river and the capital. Cyclists can head south along the river past the baseball stadium and Riverfront Park to explore historic Riverview Cemetery, with its imposing memorials to Trenton luminaries of the past, and Marine Terminal Park, whose 19th century cargo gantry cranes are listed on the National Register of Historic Places. Heading upriver cyclists can take the D&R Canal towpath at Cadwalader Park and bike all the way to Washington Crossing Park, and scenic river towns Titusville and Lambertville. In the warmer months, the Trenton Social restaurant sponsors monthly guided bike tours throughout the city.