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2015686093 Visit The Preserve Public Programs Visit The Preserve Public Programs Home Important Update Tenafly Nature Center is a nonprofit independent membersupported nature preserve in Bergen County New Jersey. Since 1961 TNC has nurtured an appreciation for nature and been a leader in openspace preservation and environmental education for our community and beyond. Open seven days a week yearround. Visitors are welcome and encouraged to visit our trail guidelines to learn more prior to their visit.