The inner core I personally did not like if was the second smallest layer and was too hot even for me. The only thing I really liked about it is it's the densest and it is solid. I was very shocked to learn it was solid I figured if it's the hottest layer so it must be a liquid layer. I learned it was solid from my tour guide who told me it was solid because of the pressure the outer core was putting on the inner core. The inner core is famous for they're museums and tours I guess.