Laguna Sausalito, Artificial lagoon in Viña del Mar, Chile

Laguna Sausalito is an artificial reservoir of 9.8 hectares and 400,000 m³ capacity in Viña del Mar, draining toward the Marga Marga estuary in the Viña basin. It was built in the late 19th century by José Francisco Vergara to protect the vineyards of the Hacienda La Viña del Mar.

The water reservoir was built in the late 1800s to supply water to vineyards that covered the area during that time. It received its current name in 1960 through a partnership agreement with a city in California.

The name Sausalito comes from the 1960 sister-city agreement with Sausalito, California; the same agreement renamed the adjacent stadium, opened on 8 September 1929 as Estadio El Tranque.

The site is easy to reach on foot and sits right in the middle of the city where different neighborhoods meet. Visitors can come at any time to take a short walk or sit on a bench and watch the water.

The lagoon's name comes from a 1960 sister-city agreement with Sausalito, California, signed the same year the adjoining stadium was renamed Estadio El Tranque. The reservoir drains toward the Estero Marga Marga and belongs to the Viña estuary basin.