Ed decided to find and visit the tallest building or structure in Second Life. Although search reveals there is no Burj Khalifa (Burj is Arabic for tower), there is the Burj Al Arab, another luxury hotel. Famous in RL for having the world's most expensive hotel rooms, it is also in Dubai and is known as the ‘Arab Sail’ because of it's shape.
Ed had a quick look round the hotel, riding the lift to the 10th floor, but at 260 meters tall, this 'Burj' is unlikely to be tallest building in SL. There was an interesting looking club on a boat called 'White Eagle' moored next door and Ed will be back some point to investigate that.