Newell Open Space
7000 Newell Drive
Photo courtesy of Visit Napa Valley
Explore the Wetlands of American CanyonThis expanse of marshland runs parallel to the Napa River in the city of American Canyon, which is located due south of downtown Napa and is the southernmost city in Napa County overall. Technically, the area is part of an interconnected watershed system that drains into San Francisco Bay, the largest estuary on the Pacific coasts of North and South America. From the Wetlands Edge Viewing Area and Trailhead, there are four different trails that meander out into the open, each providing picturesque views of the river and the estuary. If you hit Congressman Mike Thompson's Hike and Bike Loop Trail, be warned: This is the only trail open to bicycles and horses, so there most likely will be obstacles.