FALL OF THE REPUBLIC
While Darth Vader suffered a terrible defeat on Mustafar, he would choose to make the lava planet his home. The Sith Lord constructed a massive castle, harnassing Mustafar lava for energy. The building was a blackened tower, dividing in the middle to resemble tuning forks. According to legend, it was built on the site of an ancient Sith cave, and the tower itself was designed to channel the power of the dark side.