Fodor's Expert Review Fort Stevens State Park

This earthen fort at Oregon's northwestern tip was built during the Civil War to guard the Columbia River against attack. None came until World War II, when a Japanese submarine fired upon it. The fort still has cannons and an underground gun battery, of which tours are available in summer (call for details). This 4,300-acre park has year-round camping, with 174 full hookup sites, 11 cabins, and 15 yurts. There are also bike paths, boating, swimming, hiking trails, and a short walk to a gorgeous, wide beach where the corroded skeleton—or the tiny bit that remains of it—of the Peter Iredale pokes up through the sand. This century-old English four-master shipwreck is a reminder of the nearly 2,000 vessels claimed by these treacherous waters.