Situated across from the temple, the main altar (the Yuhuang altar) of the five outer altars was fifty meters long and forty meters high. Its square bell tower and bamboo windows were in the style of the Paoan Temple in Tongan, Fujian.
位於保安宮對面五大外壇的主壇（玉皇壇），長五十尺，高四十尺，四方形的鐘鼓樓與竹節窗，源自閩南同安風格的保安宮。