above aerial-balloon angled angles apartment-blocks architecture backgrounds balloon below buildings cityscape colors colours condominiums flats flight-operation gondola height helium helium-balloon high high-rise modern motion movement multi-storey multi-story perspectives roofing roofs rooftops rooves safe safety scene scenery scenic secure secured shape shapes sights sightseeing Singapore skyline streets traffic views aerial aeroplane airplane Alice-Springs appearance arial bushland central-Australia country-side distance distant expanse flying formations from-above geologically-significant isolated landscape lined lines looking-down mountainous moving outback panoramic panoramic-views remote rough rugged rural shadows sparse sunlight sunshine terrain travel travelling undulating valleys vegetation Australia