The most notable archaeological site in the Cañete Valley is Incahuasi, the rough-walled ruins of the military headquarters of the 10th Inca king Túpac Yupanqui, located on the western outskirts of Lunahuaná. It is thought that the original buildings date from 1438-ish, soon after the ascension of Emperor Pachacuti. You won’t find a lot of signage or fellow travelers here, but therein lies the attraction. The ruins are on the main road 10km west of Lunahuaná.
A taxi should cost S10 to S12 round-trip.