Megalithic art such as menhir alignments, dolmen burial tombs, and cromlechs are associated with northern Europe, especially modern-day Britain, Ireland, and France, though examples have also been found in Spain and Italy. The grandeur of these Neolithic sites, and the lack of written records, have inspired centuries of curiosity about the people who made them and the possible techniques they used. Megalithic art continues to find its way into our popular imagination in films such as 2001: A Space Odyssey, in which an impenetrable black monolith (single stone) appears in the prehistoric past and on the moon.