freethink
King
Looking at the list some more, I realized that almost all wonders towards the end of the game are feats of engineering or science; there is almost nothing religious or cultural, except the Lotus Temple and Harbour Opera. I think a strong contended for a cultural wonder at the end of the tech tree is the Guggenheim Museum (the Bilbao one). As Wikipedia puts it:
In game, I think the most fitting tech is Aerodynamics or Computers, representing the fact that advances in materials science and computer technology were necessary to build it. The associated Great Person would be the Great Artist. It would give a fair amount of culture, maybe +25% or +50%.
The effect would have to be fairly powerful for the wonder to be worth building at the end of the game, when culture has no time to accumulate much anymore. I suggest a two-fold effect: Great Works can be done by Great Engineers, and +100% Culture from Great Works. This would make the wonder useful for players trying to complete a culture victory.
Now I'm not aware of a 3D model for the museum, which may make this proposal infeasible, but I think it'd be worth creating one if we can.
I have been looking for a model but cannot find one. I don't know if a generic museum file could be used to stand in here.