Siyaksan is a mountain at the end of the Nakdongjeongmaek ridge, close to Busan's old downtown, and you reach it by taking a village bus from Kkotmaeul and following the forest road up. From the summit you can see the whole of Busan, from the Nakdonggang River to Dongbaekseom, along with Busanhang and the Yeongdo area. It is a 10-minute walk from the summit of Gudeoksan, and near the top there is a pavilion called Siyakjeong, with the summit marker behind the rainfall radar observatory. A weather observatory sits at the summit, so it feels less like a summit.