[4] The name of the monastery refers to the twin groves of sala trees located at the Bodh Gaya in India, where Lord Buddha was believed to have attained Enlightenment.In 1950s, the temple area was reduced to about 20,000 m² when part of the land was acquired by the Singapore Improvement Trust for public housing.[6] The temple was gazetted a national monument on 17 October 1980, symbolising the social and cultural roots of the early Chinese immigrants.In 1910, the buildings of the temple started to deteriorate due to termite infestations, harsh tropical weather and wear and tear caused by worshippers.To prevent termite infestation, termite-resistant timber was imported from Sarawak, and custom-made roof tiles that were more water-resistant were ordered from Japan.The doors to the main hall feature carved lattice motifs of flowers, birds and Chinese symbols of longevity, while its exterior walls are decorated with tortoise-shell designs.