The Ġgantija complex consists of two temples surrounded by a massive boundary wall. The southern temple is the older and more elaborate of the two, featuring a cloverleaf layout with apses, or semi-circular chambers, connected by a central corridor. The walls are constructed from coralline limestone, a material known for its durability, while softer globigerina limestone was used for interior detailing. Despite lacking advanced tools or the wheel, the builders achieved remarkable precision, creating a structure that has withstood millennia of natural forces.