River Legacy Park is a natural oasis of 1301 acres, and it is the perfect place to explore the Trinity River's curves in northern Arlington. The natural, urban hardwood forest is home to 400 types of fauna, 193 bird species, and 28 tree species. The River Legacy master plan, created in four phases by Sasaki and Associates in 1986, calls for much of the park to be conserved for passive activities that foster an awareness of the area's plant and animal life. Nature studies, bird watching, bicycling, jogging, picnics, and resting in nature are now educational, leisure, and recreational activities. You can enjoy the more than eight miles of paved hiking and biking trails in the park, ten miles of off-road mountain bike paths, custom play areas, pavilions overlooking the river, and a boat launch. River Legacy is a beautiful park in North Arlington with a cool, fast-paced mountain bike trail. The park's science center provides lots of programs and activities for younger kids and is staffed by friendly staff. The trails have many bypasses to shorten your ride to your level.