El Águila, Stone building in Villa Argentina, Uruguay.

El Águila is a hand-built stone structure in Villa Argentina, two kilometres from Atlántida, Uruguay, with an eagle's head and a dolphin's body, made without plans or architectural design. Its head and curved neck are faced with irregular tan, rust, ochre and grey stones set in pale mortar, and a single white-framed window with a vertical mullion sits high on the head beside the blunt, down-curved beak.

In 1945, Italian businessman Natalio Michelizzi commissioned a builder named Juan Torres to construct this house as a private residence. Over time it drew more and more visitors and became a recognized landmark along the Uruguayan coast.

The name El Águila means "The Eagle" in Spanish, though locals also call it Quimera (Chimera) because the stone head sits on a dolphin-shaped body. Michelizzi used the site for gatherings with friends and family. Legends later claimed it was a Nazi hideout, a temple or a cosmic-energy centre, none of them proven.

The site was closed off because of the risk of collapse, and the ravine, the staircase to the beach and the ship-shaped terrace have since disappeared. Visits are now organized as guided tours, and the building also hosts photography and painting exhibitions and cultural events.

The boat-shaped terrace and the staircase down to the beach no longer exist: erosion of the ravine destroyed them after Michelizzi's death, and the eagle's head began to crack. The site was closed over collapse risk, then restored between 2014 and 2018 by the NGO El Águila.