Nothing lasts forever, not even the strongest and most expensive buildings in the world. Your favorite sports stadium will eventually wear down and will need rebuilding. It is really amazing all the hard work, and materials that goes into erecting a hotel or a skyscraper, but what is really mind blowing is how easy these buildings and structures come down. Once the explosives are in place, it only takes a matter of seconds for some of the biggest buildings to meet their resting place on the ground.