When in 1928 the city government decided to transform the territory of the former Agricultural Exhibition into the Park of Culture and Leisure, the building was converted into its main canteen. Three of the six facet pavilions were separated from the internal courtyard with light walls and two of them became kitchens and had stoves installed. Toilets were built between the pavilions on the outside.
Initially, the canteen, like the park itself, was open only in the summer. In the late 1930s, when the Central Park of Culture and Leisure became the first in the country to feature a winter theme park and several ice rinks, the canteen was reconstructed once again. Its six pavilions were covered with brick walls and re-equipped to work all year round. In 1935 the canteen was renamed the Hexagon.
In the early 1960s, part of the building was repurposed for lemonade production.
In the past few decades, it served as a café, a restaurant, and a discotheque, among other things, until it was eventually abandoned. After a number of fires, the Hexagon was partially ruined.
In 1999, Moscow City Government declared it a protected monument of garden and park design. The Machines and Tools Pavilion (the Hexagon) became a listed building.