Ok then this looks imperial to me but what it's from I don't have a clue Top of a skink for size reference
I'm going to guess the undead city marker from the original Mighty Empires. Edit: Found it. Temple from the ME 1991 expansion. http://www.miniatures-workshop.com/lostminiswiki/index.php?title=Image:Citadel-075094-1.jpg