Kuelap
The fortress of Kuelap (or Cuélap), associated with the Chachapoyas culture, consists of massive exterior stone walls containing more than four hundred buildings near Chachapoyas city in Amazonas.
The structure, situated on a ridge overlooking the Utcubamba Valley in northern Peru, is roughly 600 meters in length and 110 meters in width. It was likely built to defend against the Huari or other hostile peoples. Radiocarbon dating samples show that the structures construction started in the 6th century AD and occupied until the Early Colonial period (1532-1570).
Get in edit
There are kombis daily & taxis from Chachapoyas to Kuelap. Most leave from their respective stations 2 to 3 blocks from the main square.
You can also walk up the hill from Tingo. It takes a couple of hours but is very scenic.