amusement amusement-ride around carnival carousel circular colorful colors colourful colours entertainment fair fun fun-rides height high lift lights music musical musical-ride noise ride rotating roundabout spinning turning up-and-down up-and-out angles building building-construction building-site building-work buildings construction construction-site construction-work danger external heights lifts metal-work pipes protected protection railing rails safety scaffolding security steel-scaffolding tall work work-safe workmen arm dangerous digger elevated elevation equipment hydraulics lifting machinery perspectives post-hole-digger power power-pole raised raising replacement replacing risks risky service spiraling spiralling trucks up-high vehicles