Been stumbling through the Empire tech tree, after becoming familiar with the Kingdom. I can't find an empire equivalent to the Palace (produces 7 gold per turn, and maybe some prestige). Did I miss it?
There are also some weird absences, such as an inn (for +1 prestige). Am I such a dictator that no one can sleep or drink in a crappy inn? I think the empire equivalent is a monument, which gives +1 prestige.