Nodae is a raised platform set up on fortress walls to enable the fortress’s defenders to fire multiple volleys of arrows at enemy troops. Hwaseong Fortress has two such crossbow platforms:Seonodae and Dongbuknodae. Dongbuknodae is located between Changnyongmun (East Gate) and Dongbukgongsimdon (Northeastern Watchtower) and is surrounded by a semi-circular fence.