It was built on the site of an oil refinery on the outskirts of the city. Although the final commissioning of the entire complex will only take place in 2006, most of it can now be used. In total, 20 exhibitions can be held there at the same time - 345,000 sq. m of floor space added 60,000 sq. m of open areas.
The centerpiece of the fair is Corso, a 1.3 km long glass-roofed arcade that runs between shops, restaurants, cafes and offices. The overlap of the original shape resembles a wind-filled sail. Corso is intended not so much and not so much for visitors to exhibitions as for residents of Milan and tourists.
The complex is also designed to host a variety of cultural and sports events.