Fuerte La Planchada

Fuerte La Planchada is a stone fortress located on the coast of Penco that stretches about 65 meters along the shoreline. The structure has thick walls built from stone and features gun emplacements positioned to defend the Pacific waters below.

The fortress was built in 1687 under the orders of Governor José de Garro to defend the coast from corsair attacks during Spanish colonial rule. It later served as a prison holding political detainees during the Chilean independence movement.

The fort displays the coat of arms of Spain and Governor Garro's insignia, representing the Spanish military architecture of colonial South America.

The fort is accessible via Avenida Costanera and Línea Férrea street with local bus connections to nearby towns. The area is best visited in good weather when you can see across the bay and explore the surrounding coastline comfortably.

During the Chilean independence movement, the fortress was a prison where women such as Gertrudis Serrano de Freire were held for several years as political detainees. This lesser-known female history forms an important part of the site's past.