Acaray, also known as the Fortress of Acaray, is an archaeological site located in the Huaura River Valley on the near north coast of Peru
(or the Norte Chico). The impressive fortress is located on a series of three hilltops, each ringed with a number of perimeter defensive walls that have parapets and bastions, which stand as testaments to the military nature of the site. Surrounding the hilltop fortress are lower-lying areas of occupation and extensive cemeteries that have been heavily looted.
Attention was called to the site early on by the German archaeologist Hans Horkheimer, who wrote about Acaray in 1962 in the Peruvian magazine, Caretas, published in Lima
. Calling it the Fortaleza de Huaura (the Fortress of Huaura), he deemed Acaray to be a true fortress, unlike the more well-known neighboring site of Paramonga in the Pativilca
River Valley, whose defensive nature has been questioned.