Oh... forgotten, there are more about astronomy at Malta island.
There are a couple of ancient temples as mentioned above. Some of them maybe could have been used as solar calenders.
Scroll down to middle of this page and there is more information and Wikipedia links:
http://www.astrofriend.eu/travel/eur...ern-coast.html
For you who visit Malta, you will not be dispointed.
Thanks for all comments!
Lars