Goseokjeong is an arbor located along the riverside of Hantan River. The established year is unknown, but according to Shinjeung Dongguk Yeoji Seunglam, King Jinpyeong of Shilla and King Chungsuk of Korea stayed here. A poem of Buddhist monk Moo-oe of Korea and a poem of Kim Ryanggyeong are some evidence of this fact. According to information by word-of-mouth, Lim Ggeokjeong, the chivalrous robber, hid himself in a big hole of Goseok Rock which is in front of Goseokjeong. The two-story arbor was burned in the Korean War, so the arbor was rebuilt with concrete in 1971.

Sundam is the valley 2km away from Goseokjeong, and it was there Yu Chukgi (1691-1767) who was the prime minister of the Joseon Dynasty had recuperated. The name was given after the former second minister of Joseon (while King Sunjo reigned), Kim Gwanju (1743-1806) dug up 20 pyung to make a pond and planted a water weed call Sooncha and called the pond Sundam. This valley is so beautiful because of its strange rocks and wonderful cliff. Also, white sand is created naturally, which is rare in a valley.