Matches in DBpedia 2016-04 for { ?s ?p <http://dbpedia.org/resource/Category:Protected_areas_established_in_1957> }
- Rock_Cut_State_Park subject Category:Protected_areas_established_in_1957.
- Sauble_Falls_Provincial_Park subject Category:Protected_areas_established_in_1957.
- Serpentine_National_Park subject Category:Protected_areas_established_in_1957.
- Sibbald_Point_Provincial_Park subject Category:Protected_areas_established_in_1957.
- Skookumchuck_Narrows_Provincial_Park subject Category:Protected_areas_established_in_1957.
- Stirling_Range_National_Park subject Category:Protected_areas_established_in_1957.
- Stone_Mountain_Provincial_Park subject Category:Protected_areas_established_in_1957.
- Taki_Renzan_Prefectural_Natural_Park subject Category:Protected_areas_established_in_1957.
- Temperance_River_State_Park subject Category:Protected_areas_established_in_1957.
- Terra_Nova_National_Park subject Category:Protected_areas_established_in_1957.
- Three_Rivers_Park_District subject Category:Protected_areas_established_in_1957.
- Trail_of_Tears_State_Park subject Category:Protected_areas_established_in_1957.
- Tygarts_State_Forest subject Category:Protected_areas_established_in_1957.
- Vilsandi_National_Park subject Category:Protected_areas_established_in_1957.
- Wahiawa_Botanical_Garden subject Category:Protected_areas_established_in_1957.
- Walpole-Nornalup_National_Park subject Category:Protected_areas_established_in_1957.
- Wielkopolska_National_Park subject Category:Protected_areas_established_in_1957.
- Writing-on-Stone_Provincial_Park subject Category:Protected_areas_established_in_1957.
- Yabe_Shūhen_Prefectural_Natural_Park subject Category:Protected_areas_established_in_1957.
- Yanchep_National_Park subject Category:Protected_areas_established_in_1957.
- Category:Sites_of_Special_Scientific_Interest_notified_in_1957 broader Category:Protected_areas_established_in_1957.