Hidden away in a little-visited corner of El Bosque de Chapultepec, beyond the potpourri of skateboarders, museum-goers, food hawkers and manicured pooches that throng the avenues of this vast urban oasis, is one of Diego Rivera’s lesser-known works and Mexico City’s more unusual cultural monuments. Inaugurated in 1951, Cárcamo de Dolores (the name translates literally as Sump of Sorrows) marks the end of the Lerma System, a massive infrastructure project designed to fuel Mexico City’s growth by bringing in water from the same-named river to hydrate the rapidly expanding metropolis. The project, a collaboration between the architect Ricardo Rivas, the engineer Eduardo Molina and Diego Rivera, was conceived as a ‘hydraulic temple’: a space to contemplate water as well as a functional pumping station. The sculpture and underwater murals integrated into the architecture reflect Rivera’s mission to create a Mexican art that would celebrate both the country’s modernity and its native traditions.
Sprawling in front of the elegantly spare colonnaded concrete rotunda, a Modernist take on a classical garden temple, Rivera’s Fountain of Tláloc features a recumbent giant splayed across the shallow pool. This depicts the god of rain, storms and water in Aztec and other pre-Hispanic cosmologies. As feared as he was revered, Tláloc could nourish crops or provoke drought and hunger, hurl bolts of lightning down to earth or unleash cataclysmic storms. Rivera depicts the deity holding maize seeds in one hand and two cobs of corn in the other, as if weighing up whether to nurture or stymie earthly fertility. ‘This mix of engineering, infrastructure and art was a new way of thinking about public enterprise under the modernising government of Miguel Alemán Valdés,’ says art historian and curator Luis Vargas Santiago, whose main area of interest is political imagery in modern and contemporary Latin American art. ‘It was a way for the president to show off. Rivera had been thinking about ancient gods as machines, even before the “Detroit Industry Murals” funded by Edsel Ford in the 1930s. The Cárcamo commission shows [the artist’s] interests in science, modern engineering, ancient civilisations and bathers. This is how he tackles the topic of water.’
Rivera intended the undulating form to mimic the high mountain sanctuary where Tláloc had historically been worshipped, and designed the monumental composition to be seen from the air. The god was meant to spit giant plumes of water at the clouds, but, when I visited, the fountain was dry after several years of drought.
Inside the pavilion, most of the floor is taken up by a massive water tank decorated with Rivera’s epic mural Water, Origin of Life on Earth, depicting the liquid as the source of everything. On the floor, the painter illustrates the beginnings of life as a primordial soup teeming with bacteria, unicellular organisms, trilobites, amphibious creatures, fish and plants. Ascending towards human evolution on the walls, an African man on one side and an Asian woman on the other reflect contemporaneous theories that the two continents were the cradles of civilisation. Around them are scenes showing the uses of water for agriculture, hygiene and pleasure, including bathers, a subject often featured in Rivera’s works. Murals on the other two walls illustrate hydrology’s progress from natural aqueous elements to a local triumph of 20th-century engineering: the mouth of the 14km-long Atarasquillo tunnel, which brings water from the Lerma River to the city, is viewed as a freshwater source; opposite, the vast metal sluice gates regulating flow are integrated into a scene celebrating the workers and engineers who built the system and are decorated with symbols for the chemicals used in water purification.
Rivera’s idea of creating murals to be seen underwater was both poetic and technically ambitious. He used a special rubber sealant so that the grout would withstand immersion, but it didn’t endure. ‘He saw it as both an artistic and engineering project, and he was pushing himself by doing it underwater, but it just didn’t last,’ says Vargas Santiago. In 1990, the water was diverted away from the building for reasons of conservation, and when Cárcamo reopened in 2010, it was as a dry heritage site rather than a functioning hydraulic system. Although the magic of viewing the murals through flowing water has been lost, when I visited a sound installation, Cámara Lambdoma by Ariel Guzik, provided a liquid soundtrack intended to spark visitors’ imagination. Alberto Kalach, the architect responsible for the renovation, also added an amphitheatre in front of the building to create an aerial vantage point.
Cárcamo illustrates the critical role water has played in Mexico City’s development over the centuries, determining how the metropolis has expanded and contracted, thrived and foundered. The capital rests on what was, in the Aztec era, Lake Texcoco, before the Spanish drained the water and built on the new land. These ancient waterways can still be seen in the district of Xochimilco, a Unesco World Heritage site in southern Mexico City that is famous for its pre-Hispanic canal system and practice of farming on floating gardens called chinampas, highly fertile, artificial agricultural islands constructed by the Aztecs in the shallow lake beds of the Valley of Mexico.
This wooded park has also been associated with the city’s water supply since ancient times. According to Lorenzo Alvarez, an architect who is an expert on the topic: ‘The city’s original water source, a natural spring, is in Chapultepec, and it was an important site in the colonial era, as an aqueduct arrives here. The park was a way of protecting this water infrastructure, and, as well as Cárcamo, the park’s lakes and reservoirs are all part of it.’ When the artist Gabriel Orozco was appointed the amenity’s creative director in 2019, he prioritised the forest’s environmental and water rehabilitation, using nature-based systems and a green framework to increase biodiversity and resilience. ‘This approach continues the Rivera style of merging art and infrastructure and making this an expression of the government’s ambitions,’ says Alvarez. ‘But the emphasis has shifted. Cárcamo celebrates science – but now the focus is on nature.’
With Mexico City experiencing a long-term water crisis driven by extreme drought, over-pumped aquifers and failing systems, the murals of Cárcamo de Dolores and their celebration of humans ability to bend nature to our will are beginning to look more and more like a relic from a distant era.
A version of this article appears in the July 2026 issue of ‘The World of Interiors’. Learn about our subscription offers. Sign up for our bi-weekly newsletter, and be the first to receive exclusive stories like this one, direct to your inbox
