It's the best-known and most-visited museum in the world (and if you've ever spent valuable hours of your trip to Paris waiting to get in, you know just how popular it is).  But now, there's another Louvre. The Louvre Abu Dhabi opened at the end of 2017 as an outpost of the fabled French museum. It's part of a multi-billion dollar, 30-year cultural agreement between the Emirate and France that includes Louvre art loans, special exhibitions and collaboration on museum...