Uluru,

Northern Territory, Australia
The imposing beauty and spiritual significance of this mammoth monolith, which thrusts out of the red dirt in the desolate centre of Australia, is unnerving. Surrounded by the Red Centre's untamed wilderness as far as the eye can see, there's something truly primeval about the ancient sandstone boulder. It's a hugely sacred site for the Anangu people – the custodians of the land – and one of the greatest natural wonders of the world.