Ggantija (“Giants’ Tower”) is a megalithic temple complex from the Neolithic on the Mediterranean island of Gozo. The Ggantija temples are the earliest of the Megalithic Temples of Malta.
From the churches are obviously not much left, it is likely that little bit more interesting for architects. One of the walls of the church had iron structure to keep it from falling apart.
The more interesting stuff are exhibited in a museum at the entrance of the temple.