I'm sure most of you rememmber the old tech demo from 2005.
take note of this image in particular.
what ive noticed is that three of the cities in 14 seem to resemble this concept city in different ways.
obviously Limsa Lominsa is simila in that it consists of a city over water suspended and connected via the use of bridges.
The general dome-shaped architecture is very reminicent of Ul'Dah.
and finally the hot air baloon and the docks on the left side of the picture look alot like this:
http://www.eorzeapedia.com/wp-content/uploads/Fusionx/2009/08/uldah.jpg The pic in the top right
there has been debate as to whether the top right pic is uldah from a different view point, or the fourth city, ishgard.
i believe it is indeed ishgard as the picture beside it shows a mountainous area and there are mountains in the background of the city picture as well. uldah seems to be very flat, no mountains at all. But to the point, there is a blimp as well as similar looking docks on the left side of that picture.
just interesting, no real point.