O Cromeleque dos Almendres é um monumento megalítico que está situado numa encosta voltada a nascente, na freguesia de Nossa Senhora de Guadalupe, concelho de Évora, Distrito de Évora. Trata-se do monumento megalítico mais importante de toda a Península Ibérica, não só devido à sua dimensão, mas também, devido ao seu estado de conservação. É também considerado um dos mais importantes da Europa. Está classificado pelo IPPAR como Imóvel de Interesse Público desde 1974. <a href="http://pt.wikipedia.org/wiki/Cromeleque_dos_Almendres" rel="nofollow">pt.wikipedia.org/wiki/Cromeleque_dos_Almendres</a>

The Almendres Cromlech megalithic complex, located [show location on an interactive map] 38°33′28″N 08°3′41″W / 38.55778°N 8.06139°W / 38.55778; -8.06139Coordinates: [show location on an interactive map] 38°33′28″N 08°3′41″W / 38.55778°N 8.06139°W / 38.55778; -8.06139 near Guadalupe, Évora, Portugal, is one of the earliest public monuments. It is the largest existing group of structured menhirs in the Iberian Peninsula, and one of the largest in Europe. This megalithic monument originally consisted of more than one hundred monoliths[citation needed], some of which have been taken away for other uses. A recent dig showed that the complex had undergone several building phases during the neolithic period (5000 - 4000 b.c.)[citation needed]. It was found rather late, in 1964. 92 menhirs of different sizes currently form two grounds that were built oriented to different equinox directions. Several of them were put back in place[1][3]. The axis of the ovals is oriented along am east-west direction. The complex's position latitude is about the same as the maximum moon elongation (38,55 degrees for 1500 BCE); the other latitude at which that happens is that of Stonehenge, 51,18 degrees for 2000 BCE. About a dozen monoliths present some form of carved drawings, four of which exhibit only small circular holes. Monolith number 8, with a cut flat top at about breast level and showing several dimples, might have served for finer astronomical observation, specially spring equinox observation, by putting small stones on them. These observations might be made from stone 39, on the eastern focal point of the elliptic layout. It is believed that the monument had religious purposes and functioned as a primitive astronomical observatory.