Fort Stevens was once the primary military defense installation in the three-fort, Harbor Defense System at the mouth of the Columbia River (along with Forts Canby and Columbia in Washington). The fort saw service for 84 years, from the Civil War to World War II. Today, Fort Stevens is a 4,300-acre park offering a variety of recreation adventures.

Camping, beach-combing, freshwater lake swimming, trails, wildlife viewing, a historic shipwreck, and a historic military fort make Fort Stevens a diverse park. Take a bike ride on the nine-mile network of paved bicycle trails and hike on the six miles of hiking trails. Explore a variety of habitats, including spruce and hemlock forests, wetlands, dunes, and shore pine areas.

Coffenbury Lake has two swimming areas, a picnic area, restrooms, and a boat ramp. Two smaller neighboring lakes are great for fishing and canoeing.

Enjoy year-round military displays at the military museum and information center. Visit the only Civil War-era earthen fort on the west coast, or explore the many turn-of-the-century, concrete artillery gun batteries. Underground tours are available during the summer of a gun battery that served as a World War II command center.