The Crystal Spire
A giant spire interweaved with stone and crystal (where it gets its name) that overlooks Rislandia City. Prior to industrialization, rumor had it on clear days people could see all the way to the Border River from the top. It has a view deck up top and contains the office of the High Knight.
Built by the original settlers of Rislandia so they wouldn't be blindsided by forces following them from Atrebla, where they fled from.