Mentioned by Citybase Apartments
29 Free Things to do in Edinburgh
"Even if you are not a fan of politics, The Scottish Parliament would be a good sightseeing spot. Not only is the building itself really interesting, you can watch a parliamentary session, it hosts art exhibitions and has a lovely modern garden that you can explore. If you want to know more, The Scottish Parliament also offers a selection of free guided tours focusing on the different aspects and functions of the building."