#four times now

I feel kind of dumb for not noticing this given how long I’ve been playing but

I never noticed the history murals on the walls of the level select buildings? Since I missed a couple, I went and activated one then headed back to the beginning. Lo and behold, they fill out as you find them!

Even after playing this game for a long time I still discover new things :)

Bonus: here are the missing murals, filled out!