As well as all these buildings, UNO cities contain Pods in their normal layout, with UNO cities in between the Kalgon hexagon layout. There are no towns in UNO planets, either a city or nothing.
The common UNO apartment is a huge skyscraper, powered by Gyronic.
A miscellaneous building; its use is unknown.
A building that is a reactor structure, powering cities and planets.
A structure that is a 'city hall', the centre of planets and cities.
A large structure, Shopping Malls are the centre of UNO's and culture.
The Highest Point
The home of UNOL and the council.
There are several other UNO buildings used.
You can find these buildings on Sporepedia.