Hongneung Arboretum (Korean홍릉수목원; Hanja) is an arboretum in Dongdaemun District, Seoul, served by Seoul Subway Line 6. The grounds are freely open to the public on weekend, but picnics are not allowed.[citation needed]

Hongneung Arboretum, Aralia cordata, 2009.
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37°35′35″N 127°02′37″E / 37.59306°N 127.04372°E / 37.59306; 127.04372