Arlington, VA is a beautiful place to live in. On or near the DC Mall, which can be reached by the Metro train, these popular exhibits, all free, so no money is needed except for train fare and dining. One could spend a week in each of these exhibits and still not see everything in them. Air and Space if you like technology, old and new. Newseum, which gives a lot of US history as covered by the newspapers. Smithsonian for lots of US history with interesting exhibits of each topic. Holocaust