The entire complex occupies an area of around 17,000m2. The main entrance comprises a colonnaded portico, with all the buildings inside the facility laid out along a central axis. This innovative groundplan was inspired by the model set by the Offenbach Slaughterhouse in Germany. The Slaughterhouse only ceased operations in the early 1970s.
Then, in 1984, after refurbishment that respected the form of the original structure, the Cattle Slaughter Hall, which had been the main hall in the complex, was fitted out as an exhibition space. This soon became known as ‘La Cattedrale’ because its distinctive form reflected that of a nave and two side aisles. The main entrance is a colonnaded portico, originally the place where the animals were inspected and weighed. Nowadays, the building to the right of the portico, which once housed offices and the residence of the Slaughterhouse Manager, has been fitted out as a Planetarium