A 20-mi/32-km stretch of woods along the Cuyahoga River creates a 33,000-acre/13,354-hectare green "bridge" between Cleveland and Akron. Hiking, biking, horseback riding and cross-country ski trails, fishing spots and a bed-and-breakfast are contained inside the park. 7104 Canal Road, Brecksville. Phone 216-524-1497. http://www.nps.gov/cuva.