angles appearance architectural architecture Australian building built contrast contrasting dark design elements external garden grass height heritage historic historical masonry metal old old mill past perspectives plain Renovated renovation repairs roof roofing rust secure shadows solid stonework strength strong sunlight surfaces tin roof utilitarian wagon walls wheels windows all-weather-space bark branched branches caudex conservatory deciduous display displayed distinctive dome dormant dorstenia-gigas exotics flower-dome gardens Gardens-by-the-Bay glasshouse gnarled greenhouse grotesque horticultural horticulture indoors moraceae ornamental pachycaul-shrub plants shape shaped shapes Singapore Socotran-fig-tree succulent surface texture textures tree trunk unusual vegetation Apocynaceae caudiciform-plant fat-twisted-roots fockea-edulis ground-level Hottentot-bread semi-deciduous South-Africa-native vine-branches bottle-shaped bottle-tree ceiba-chodatii floss-silk-tree inside palo-borracho South-American stored-water subtropical swollen-trunk tropical warty-tree