above-ground architectural architecture danger dangerous elevated futuristic Gardens-by-the-Bay height high iconic icons landmarks panoramic panoramic-vistas reinforced-concrete safety scenic Singapore skyline steel strong Super-trees Supertree-Grove suspended tree-tops trees vertical-gardens views vistas angles adventure-playground artificial artificially-shaped artistic Australian background big concrete craftsmanship creations culture dinosaurs dinsaur display educational eggs exhibit extinct figures fossil hatchling history huge large life-like light make-believe model natural-history park playground powerful realistic reconstruction reinforced replica reproduction shade shadows shape shaped sunlight sunshine afternoon building building-construction building-materials building-sites building-work buildings construction construction-sites construction-work cranes dark darkening edge estuary heights late-afternoon levels metal-work multilevels railing rails reinforcement scaffolding security steel-scaffolding tall waterside water’s-edge winter work aerial-walkway cables connected connections OCBC-Skyway pedestrians stroll strolling walkway alone arm-rests back-rest bench brown color colors colour colours comcrete fixed furniture gray grey isolated joined lines maintenance outdoor outdoor-bench outdoor-furniture outdoors patterns peace peaceful public rest rustic seat seating slats strengthened surface surfaces surfacing texture textured textures timber tree weathered wood wooden wooden-slats