It won't be finished before next year, but Burj Dubai is already 1,680 ft high (141 floors), nudging out Taipei 101 (1,666 ft) as the world's tallest building. It looks like it's going to remain......
Seventy-five years after it opened its doors, the Empire State Building looms large -- and not just on the Manhattan skyline. In many minds, it remains the ultimate skyscraper, though it has been......