獨特的五對柱結構
洪聖古廟的建築設計，為中國傳統的兩進三開間式，兩進之間的天井設有上蓋，稱為香亭，以增加建築物的遮蔽位置，保護廟宇免受風雨破壞。一般的廟宇都以四對柱承托屋頂的重量，而本廟特色之一是以五對花崗岩造成的石柱作支撐，其中第二及第三對柱，則主要用以承托廟側捲棚式走廊的簷頂。
独特的五对柱结构
洪圣古庙的建筑设计，为中国传统的两进三开间式，两进之间的天井设有上盖，称为香亭，以增加建筑物的遮蔽位置，保护庙宇免受风雨破坏。一般的庙宇都以四对柱承托屋顶的重量，而本庙特色之一是以五对花岗岩造成的石柱作支撑，其中第二及第三对柱，则主要用以承托庙侧卷棚式走廊的檐顶。
Five pairs of pillars
The temple adopted a typical Chinese vernacular “Two-hall and Three-bay” layout. A courtyard covered with a pavilion is sitting in-between the two halls and two side chambers were constructed on its left and right. Unlike most of the traditional temples which adopted a four pairs of pillars’ structure, the building structure of Hung Sing Temple is supported by five pairs of pillars, a remarkable design distinguished itself from the others.