Menhirs are found all over the world. Some stand alone, others form part of stone circles, rows and other shapes. In Malta it's thought they may have once belonged to megalithic temples or other Neolithic buildings. Alternatively they may have been built during the later Bronze Age. The purpose of menhirs isn't known, but theories vary from them having been used for astronomical alignments or as boundary markers between different villages. This section also features scattered megaliths which must have belonged to a building, but often the sites are too ruinous to provide any useful information.