A lot of countries around the world are doing some incredible design work with their cash---see Norway---and the USA greenbacks are looking awfully run-of-the-mill in comparison. Luckily, Swiss designer Travis Purrington decided to give redesigning the U.S. currency a go and the end result is completely amazing. It doesn't look to the past with faces of former Presidents, but to the future, with images of space exploration and gorgeous skyscrapers. Here's a look...