Walk the Amphitheater Park in Perth Amboy. This new park has paved paths to the Raritan River. It is located on the site of the former copper works, and later a steel mill. It was recently redeveloped with warehouses, trails and parks. Also get a view of the new NJ Transit bridge under construction across the Raritan River. The park is located at the intersection of Elm St. and Riverview Dr. Hosted by the Middlesex Greenway. Free