Piscina Antilén, Public swimming pool in Parque Metropolitano, Santiago, Chile

Piscina Antilén is a 92-metre-long, 25-metre-wide public pool on the summit of Cerro Chacarillas in Parque Metropolitano, Santiago, holding up to 1500 people. Architect Carlos Martner set it into a disused quarry, and the walls use stone taken from those same quarries. Mid-pool, an artificial rock pyramid ringed by a pirca wall separates the adult and children's areas; a pedestal on top carries an espino, a native shrub of the park.

Designed by architect Carlos Martner and built by park workers in a disused quarry using stone from that same quarry, the pool opened on 10 January 1971 as Piscina Popular Chacarillas, drawing 2,000 to 3,000 visitors on weekend days in its first months. It reopened to the general public on 28 December 1976 under the name Antilén, with an entrance fee similar to that of Piscina Tupahue.

This facility serves as a social hub where Santiago residents gather with family and friends during warmer months to spend time together. The pool and its surroundings become a place where people naturally congregate for leisure and recreation.

The pool sits on the summit of cerro Chacarillas inside Parque Metropolitano, so reaching it means walking up park paths; the 92-by-25-metre basin holds up to 1500 people. A rock pyramid crowned by a pedestal with an espino separates the adult and children's areas, so families can pick their side.

From the water basins, swimmers can view Santiago's skyline stretching across the horizon while bathing or relaxing. This view transforms a simple swim into something more memorable by connecting the water space with the city beyond.