The Most Iconic Feature of a K2 Civilization
Since the defining characteristic of a Kardashev 2 civilization is the fact that it uses all the energy of its parent star. There needs to be a way to collect all that energy. We mentioned in a earlier post about one of the solutions is a Dyson Sphere or a Dyson Swarm.
The YouTube channel Kurzgesagt has many very interesting videos on distant future technology. About a year ago they did a very good video explain the basics. Check out the video below.