This quiet beach on a narrow sand-spit allows visitors a unique opportunity to experience both the Pacific Ocean and the San Diego Bay. The 2.5 miles of ocean side is great for surfing and other water sports while the bay side, accessible via foot tunnel under Highway 75, has calmer, warmer water and great views of the San Diego skyline. Lifeguards and rangers are on duty year-round, and there are places for biking, volleyball, and fishing. Picnic tables, grills, and fire pits are available in summer, and the Silver Strand Beach Cafe is open Memorial Day through Labor Day. The beach is close to Loews Coronado Bay Resort and the Coronado Cays, an exclusive community popular with yacht owners and celebrities. You can reserve RV sites ($65 beach; $50 inland) online (www.reserveamerica.com). Three day-use parking lots provide room for 800 cars. Amenities : food and drink, lifeguards, parking (fee), showers, toilets. Best for: walking, swimming, surfing.