Why do wizards build them? Well, the answer is simple...To harness the energy from ley lines and nexuses. Function is rather like a True Atlantian pyramid, with a few exceptions...Tower can not teleport in the world or multidimensionally. No teleporting to other towers. No opening dimensional gateways. However, people can be gated from the tower but is limited to 25 miles if it is constructed on a ley line, at a 2-4 ley line nexus you can teleport for 50 miles, 5-7 = 75, 8-10 = 100, etc. You can communicate with other towers as long as they are siting on the same ley line as you. And a wizard can control the weather for 25 miles if the tower is constructed on a ley line, at a 2-4 ley line nexus 50 miles, 5-7 = 75, 8-10 = 100, etc. The height will determine the amount of energy it can store.
Once a tower is constructed, a wizard more or less rules over an area. So kings are rather leery of granting a building permit to wizard for a tower. However, that has not stopped them from issuing a (What's the term, where a king grants lands to be captured in his name, but governed over by the one who has captured the land?
![Confused :?](./images/smilies/help.gif)
Not an enfeoffment...Letter of something.)
Ankh, udja, seneb.