These Lego skyscrapers make quite a skyline (can you name them all?):
Picture taken by brickshelf user PepaQuin
These skyscraper models are not mine. They were displayed at Brickworld in Chicago last weekend. The Burj Dubai model is about 16 feet high. It is the highest privately* built Lego model of which I am aware.
* Lego skyscrapers models at Legoland theme parks range up to at least 23 feet high.