Buildings come in a wide amount of shapes and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, to land prices, ground conditions, specific uses and aesthetic reasons. Buildings have also become objects or canvasses of artistic expression. In recent years, interest in sustainable planning and building practices has also become part of the design process of many new buildings. Here are some unusual and unique designs of amazing buildings of the world. It will make you see it over an over again. Its addictive.