The Seoul Namsan Gukakdang, located within the Namsan Hanok Village, is a theater exclusively for Korean traditional music performances with the exterior design of a traditional Hanok. It is located underground, but the Sunken garden allows lighting and ventilation. The stage is structured in a thrust shape, a combination of the Western proscenium and arena format, to form the shape best for performing our traditional music. The stage can change its structure to accommodate various performances from classical music (proscenium structure) to Korean traditional music (thrust structure). By using a special wood that does not absorb sound as the interior finishing material, the minute echoes of the gayageum can be felt equally wherever the audience is seated.