The Venus of Willendorf (about 25,000 years ago) and the cave paintings of Altamira and Lascaux (some 15,000 years ago) are merely the most famous examples of a vigorous palaeolithic art found in many parts of Europe. Similarly the exposed plains of eastern Europe contain traces of the earliest known free-standing dwellings - circular huts, semi-sunken, with stones or tusks supporting some form of superstructure.