access accessible acoustic-bowl blocks bush carpark event-venue foliage grass grassed-area grassland groundcover landscape lawn leisure open-air park parked parking public recreation recreational seating semi-circles semi-circular shade shadows shrubbery sky stage-area steps sunlight sunshine terrain trees vehicles acoustic-shell acoustical-shell aerodynamic-canopy canopy concert construct constructing construction contained entertain entertaining entertainment fenced free grasas music music-bowl open-air-concerts outdoor outdoor-music-shell outdoor-orchestra-shell outdoor-orchestral-shell outdoor-performance-venue outdoor-theatre-shell outdoors platform preparation scaffolding shelter sheltering stage staging temporary theatre