need good graphic for such kind of building (city improvements, wonder) in mesoamerican style.
maybe someone would like to see a modern one too ;)
i linked two pics of how the aztec capital Tenochtitlan looked like (it was build on an artificial island)

http://eles.freeservers.com/Tenoch/Tenoch2A.jpg
http://college.hmco.com/history/west/mosaic/chapter9/images/600.map_tenochtitlan.jpg

I think you would need to significantly reduce the size of the city graphics to make this look believable. Just my 2 bits.

Hm, how would you use a wonder like that? Perhaps it would be plausible to have a tech that allows you to make a building which allows you to have larger cities? Other than that i do not understand what kind of graphic can be made since if it is an improvement it would have to be in the city, but in your pics the city is on it ;)

i dont think its a problem the pics showing a whole city, it should just give an impression of the way how it should look like. it doesnt need to be gigantinc like on the pics ;>
i got an aztec temple in mind, surounded by water with 1 or 2 of that bridges/pontons?, that would fit my needs very well.

I would say, why not just make cities that are surrounded by water.

The city graphic could contain the whole graphic: water, bridges et al.

yes but i need it for a building not as a general city graphic ;)
if someone could create such a building graphic it would be great :)