aircraft anchored balloon cable checks circular colors colours control controlled duty-pilot engineers fabric filled flight-operation gondola height helium helium-balloon high inspected inspections large limited mesh metal-cable metal-line monitored monitoring motion movement net passengers pilot piloted registered ride safe safety secure secured sights sightseeing Singapore tethered tourists views weather-limits wind-limits abstract angles artistic backdrop background black blended blue bright brilliant circles color colored colour coloured corners decoration decorative design detailed detailed patterns edges geometric geometrical image images interconnected intermeshed interwoven kaleidoscopic patterns light lines mandala multicoloured patterns perspectives pointed points radiating rays red rounded shapes sharp style texture textures vibrant wallpaper white yellow angled bricks brickwork circle community-area courtyard designed Designs detailing distinctive edged fitted fitting footpath garden garden-wall ground interlock interlocked interlocking level outdoor-area outdoor-space park paved paving paving patterns paving-bricks public rocks round semi-enclosed shaped smooth stone-wall stones stonework surface surfaces textured wall-seating pink purple spiral spiraling spiralling carousel compartments container containers convenient curved divided divisions edible finger-food food-safe ingredients junk-food lazy-susan multiple organiser organizer plastic plastic-lazy-susan platter revolving rotating salty savory savoury separate separation snack-food snacks spinning spinning-container storage storage-spaces storage-tray storage-trays store storing sugary sweetness tasty triangular turntable green