|| || || Lynn Shores and Nahant Beach Reservation, Lynn Shore Dr., Lynn, MA, (617) 727-1397. The MDC-managed reservation includes four miles of waterfront. A promenade near the edge of Nahant Bay is popular for walking, jogging, and bicycling. Other natural features include a mile-long system of fragile sand dunes parallel to Long Beach and creature-filled tide pools at Red Rock Park. Ball fields, racquetball courts, and tennis courts are near the Nahant Rotary. The park headquarters, at Ward Bathhouse, is surrounded by a tot lot, restrooms, and showers. Lifeguards supervise parts of Long Beach during July and August. A parking lot near Long Beach holds 1300 cars; fees are assessed between 8 a.m. and 4 p.m. The reservation is open daily from sunrise to sunset.