The 600-foot high InTempo towers in Benidorm, Spain have been billed as 'a vision of the future' and a symbol of Spain's reemergence from a crippling financial crisis. At 47 floors it was intended to be the tallest residential building in Europe. Now only months away from completion, contractors have hit upon a slight problem. They forgot to build an elevator. The towers were originally designed to be only 20 floors high, but ambitious developers decided to double the scale of the project midway through. An elevator exists for the first 20 floors, but beyond that there is only the stairs.