Virtually everyone has some truly positive memories from their childhood involving Lego. It's one of the best toys for creativity, play, and display, perfect for not only kids but adults, too. Although there are dozens of very popular Lego Themes out currently, from Star Wars to Harry Potter to City to Ninjago, some themes didn't stand the test of time and have sadly retired. We're going to be going through the top 10 lego themes that were discontinued, some nostalgic brands that are no longer out there.