Day-trippers head 25 miles north of Seattle to Whidbey Island, where beaches, nature, and wildlife abound. For panoramic views of the Olympic Mountains and Strait of Juan de Fuca, visit Fort Ebey State Park. Once called the "Triangle of Death," the 635-acre park served as a coastal defense fort to protect Puget Sound during World War II. Although bunkers remain intact, now, the landscape is crisscrossed with miles of scenic biking and hiking trails. Breathe in salty air and spot bald eagles, whales, and seals from the shoreline bluffs along Admiralty Inlet. Or brave a stroll on the rocky, driftwood-strewn beach below.