This park appears as part of the palace in Hwarang (화랑) (KBS2, 2016-17) as seen, for example, in episode 5 and 6.
Also seen in Moon Lovers: Scarlet Heart Ryeo (달의 연인-보보경심 려) (SBS, 2016); The Iron Empress/Empress Cheonchu (천추태후) (KBS2, 2009); The Kingdom of the Winds/The Land of Wind (바람의 나라) (KBS, 2008-09); The Legend/The Story of the First King’s Four Gods (태왕사신기) (MBC, 2007); Yeon Gaesomun/The Great Hero (연개소문) (SBS, 2006).
Ondal Tourist Park [온달관광지] that includes a museum a cave and a fortress as well as a section which exhibits props used for filming has been the backdrop for a lot of historical K-Dramas. It is located in the village of Ha-ri [하리] in the Yeongchun Township [Yeongchun-myeon/영춘면] of Danyang County [Danyang-gun/단양군]; around 4hrs by public transport south-east of Seoul.
Address: 23 Ondal-ro, Yeongchun-myeon, Danyang-gun, Chungcheongbuk-do
충북 단양군 영춘면 온달로 23
(영춘면 하리 147)
Geolocation: 37.062693, 128.492632
— submitted by deanekitty29