Located next to the old Jiang House on the south coast of Hongmao Harbor are 108 trees of Celtis sinensis Pers, a plant considered a national treasure.

• 位于红毛港南岸姜家古宅旁，为数108株百年巨木的朴树林，为台湾西海岸特有国宝级植物，这些老龄朴树具有制造气氛、净化空气、调节气温、创造绿意、美化环境的龚能。