Dorchester, Boston's largest neighborhood, is also one of its most diverse. Long-time residents mingle with newer immigrants from Ireland, Vietnam, and Cape Verde. The nation's first Vietnamese Community Center is located in Fields Corner, the heart of the Vietnamese community in Boston. Dorchester Avenue anchors the neighborhood business district with a unique mix of ethnic restaurants, beauty salons, electronics stores, and pharmacies. Franklin Park, considered the "crown jewel" of Frederick Law Olmsted's Emerald Necklace Park System, is located here. The Park features 527 acres of green space and walking paths, a zoo, and an 18-hole municipal golf course. Neighborhood pride is strong in Dorchester, as former residents have been known to wear T-shirts proclaiming "OFD" - "Originally From Dorchester." Bordered by the Neponset River and Boston Harbor, Dorchester residents enjoy the riverfront amenities of Pope John Paul II Park as well as harbor beaches and boating opportunities.