Great shrines and temples generally have functions connected with mountains. Some are painted white to symbolize the snowcapped Himalayas. Such things as domes, spires, hexagonal or octagonal towers are representations of Mt. While big Hindu temples are encouraged at sangams (confluence of rivers), river banks, lakes and seashore, Brhat Samhita https://hanumanmandirsydney.com.au/maa-sherawali-mandir-sydney/