"The Royal Palace located in the center of Stockholm and is a must visit. The grand structure is impressive just to walk by but when you enter into the palace it is amazing to see how royalty lived with the grand rooms, intricate art and furniture, marble stairs and learn more about the history. I also recommend getting a Stockholm Card if you want to see the main sites in the city. It is a great way to get discounts and get into places like The Royal Palace: http://www.visitstockholm.com/en/Stockholmcard/"