Intricate roof of Lukang Longshan Temple
A large caisson or spider web ceiling is located at the rear of the Hall of the Five Gates above the stage. A feature of traditional East Asian architecture, Caisson ceilings are built of decorated interlocking wooden beams that are raised above the level of the roof. The system is supported by dougongs, interlocking wooden brackets that are held together without the use of nails. Caisson ceilings are believed to ward off evil but its location above the main stage also acts to enhance the acoustics during performances and traditional plays.