14.1750°S, 71.3667°W.
Raqchi, also called the Temple of Viracocha, lies in the Cusco region 110 kilometres southeast of the imperial capital at 3,460 metres elevation, beside the Vilcanota River. The principal structure is an enormous roofed temple measuring 92 by 25.5 metres, built during the reign of Pachacuti in the mid-15th century. The central wall, which divided the interior into two long halls, still stands 12 metres high — the highest surviving Inca wall — built of finely cut andesite blocks for the lower 4 metres and adobe above. Eleven cylindrical columns, also of stone-and-adobe combination, supported the immense thatched roof along each side aisle. Pedro Cieza de Leon described the temple in the 1550s while it was still in use. Surrounding the temple are residential compounds, a circular plaza, and 152 cylindrical storage qollqas in regular rows that once held maize and quinoa for state distribution.
The block of qollqa foundations still marks the slope above the temple in disciplined parallel ranks.