This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Dongbuk Gongsimdon, meaning the north-east observation tower, is situated beside Changnyongmun. Oval in shape, its three stories stand 6.8 metres (22 ft) tall. The roof is accessible by an internal spiral staircase