In my current game as germany, I saw that Rome had built the Moai statues [because I could see the hammers on the water tiles around it]. This is on the 3000BC start and the great empire had been conquered by the barbarians, who held Mediolanum and Rome. So eventually I moved to conquer it (quite late though, the barbarians remained unmolested by the other civs until I made my move in the 1600's). So anyways I took the city, and the statues had mysteriously disappeared... The colloseum stayed though. So what's up with that? I thought wonders weren't supposed to be cleared on conquest and aren't the Moai Statues a world wonder in Rhye's?