I heard that the classic Wonders of the World will appear in the player depending on his culture and level, but what about modern Wonders of the World? Will it be possible to create / spawn the Louvre or the Uffizi Gallery or maybe even the Burj Khalifa? It would be interesting to know.

 It is also interesting to learn about masterpieces of art and artifacts. I played a lot in the Civilization series of games where similar mechanics are present. It would be interesting to see how your tribe creates rock paintings in some unknown cave, and after thousands of years it becomes a world landmark.