Perched atop a hill in the historic center of Cuiabá is a unique attraction — the Morro da Caixa D’Água Velha Museum. This site is a remarkable example of 19th-century industrial architecture transformed into a modern cultural space. For 142 years, it served as the city's main reservoir and the only source of centralized water supply in this part of Brazil.

The museum's architectural style is reminiscent of ancient Roman aqueducts. The structure consists of two impressive underground galleries, 45 meters long, with walls made of canga stone and brick. The masonry reaches half a meter in thickness, allowing the structure to withstand the colossal pressure of 1 million liters of water without the use of concrete or metal reinforcement.
Today, this site is recognized as a cultural heritage landmark. The museum harmoniously combines the rugged beauty of antique engineering with the dynamics of modern exhibitions, offering guests not only historical insights but also magnificent panoramic views of the city.