Today, some 7,000 Nuraghes dot the Sardinian landscape. While initially these Nuraghes had a relatively simple structure, with time they became extremely complex and monumental (see for example the "Nuraghe Santu Antine", "Su Nuraxi", or "Nuraghe Arrubiu"). The scale, complexity and territorial spread of these buildings attest to the level of wealth accumulated by the Nuragic Sardinians, their advances in technology and the complexity of their society, which was able to coordinate large numbers of people with different roles for the purpose of building the monumental Nuraghes.