One kilometer from the town center, on a hill overlooking the confluence of the Río Grande and the Río Huasamayo, the Pucará de Tilcara is the largest preserved pre-colonial fortress in the Quebrada de Humahuaca. It was inhabited between the 10th and 15th centuries by the Tilcara (Omaguaca) culture and partially incorporated by the Tawantinsuyu (Inca Empire) before Spanish arrival.
The site covers more than 8 hectares of residential, ceremonial and defensive structures that were partially reconstructed during the 20th century. The reconstruction was archaeologically controversial — modern materials and period criteria were used — but it gives a useful sense of the original settlement's scale.
The site is run by the Centro Universitario Tilcara (University of Buenos Aires) and opens Tuesday to Sunday from 9 am to 6:30 pm (last entry 5:15 pm; closed on Mondays). The 2026 rates are ARS 12,000 general admission and ARS 6,000 for Argentine residents; children up to 12, retirees and Jujuy residents with ID enter free, and the ticket includes the High-Altitude Botanical Garden. A self-guided visit takes 1.5 to 2 hours. The marked trail climbs the hillside; the summit offers panoramic views of the valley and the surrounding multicolored hills. Arrive before 10 AM to avoid the midday heat and the largest tour group concentrations. In July the site can receive several hundred visitors per day.








