Bodega de la viña San Carlos, Wine cellar in Puente Alto, Chile.

Bodega de la viña San Carlos is a circular adobe winery in Puente Alto, about 51 metres in diameter, with three concentric earthen walls and a central hexagonal core rising through five levels to a turret with a spire. The central space held 200-litre fermentation barrels, the inner ring was used for ageing and bottle storage, and the outer ring housed production.

This facility was established in 1895 during a period of growth in the region's wine industry. It marked a moment when Chilean wine production was developing through the introduction of European grape varieties adapted to local conditions.

Locals nicknamed the low-quality wine sold from the cellar in its decline "vino Castellón", a name later reused for the 2009 restoration plan "Restauración Castellón, ex bodega Viña San Carlos". The building's three concentric adobe rings were each assigned a step of winemaking: the central hexagonal space held 200-litre fermentation barrels, the first ring was for ageing and bottled wine, and the second for processing.

The building stands abandoned and its park was stripped of monument status in 2016, so access is not guaranteed; check with the Puente Alto municipality before travelling. The structure is a circular adobe shell with concentric rings, so keep to the outer perimeter and do not enter the interior levels.

The structure was designed with earthquake resistance that was uncommon for industrial buildings at that time, blending local construction methods with modern needs. This feature allowed the building to remain stable over many decades despite the region's seismic activity.