Most Ambitious Transportation Projects of the 21st Century

Johannes Simon, Getty Images

Anyone who has had their commute disrupted by bulldozers and pavers knows how long it takes to patch one small stretch of highway. But what about when the project is more elaborate -- say, blasting through the Alps or tunneling under the largest city in the country? As our world gets smaller and everyone wants to make connections faster, countries all over are undergoing major projects that would change the way we get from Point A to Point B. Some are already in the works while others are pipe dreams (Can you imagine getting from New York to London in an hour?).