On top of the world

Well, sort of. This is the Burj Khalifa, currently the world's tallest building at 828 metres. Tourists can go just over half way - to the Observatory Deck on the 124th floor (452 metres up). So not quite the top, despite the title of the tour (At the Top) but not bad. Apparently there are plans for a taller building (1,000 metres) in Saudi Arabia - but this will have to do for now!