Ocean Beach (also known as O.B.) is a laid-back beachfront neighborhood of San Diego that lies on the Pacific Ocean at the estuary of the San Diego River. Located about 7 miles northwest of Downtown San Diego, it sits south of Mission Bay and Mission Beach and directly north of Point Loma. Residents of Ocean Beach often refer to themselves as "OBceans" or "OBecians,". The community became an attraction for hippies, who eventually became accepted by many local business establishments. The economy of Ocean Beach is dominated by small, independent retail businesses. The main business street, Newport Avenue are restaurants, tattoo and piercing shops, coffee houses, bars, bike and surf shops, and an international youth hostel. The community has actively opposed chain business opening in OB, and only a few exist there. Recreational facilities include the Ocean Beach Recreation Center, Dusty Rhodes Park, and the Robb Field athletic fields and skate park. Local events include the Ocean Beach Street Fair and Chili Cook Off, a jazz festival, the Ocean Beach Christmas Parade, the Ocean Beach Kite Festival on the second Saturday of May, and the Ocean Beach Canine Carnival on the Sunday before Halloween. On Wednesday afternoons two blocks of Newport Avenue are closed for a farmers' market. The Ocean Beach Municipal Pier, is the longest concrete pier on the West Coast and includes a restaurant and bait shop. A concrete walkway spans part of the length of the 1 mile beach. The northern end of O.B.'s waterfront is known as Dog Beach that's open 24 hours a day for leash-free dogs.