Aristotle famously once said that "the aim of art is to represent not the outward appearance of things, but their inward significance." The relevance of this great quote will not be lost when you take in the collection at Capitol Arte Contemporane.
You're spoiled for sightseeing choice in Cagliari. Capitol Arte Contemporane is a good place to begin here, but there are many other fine sights to check out. Bastion of Saint Remy, National Archaeological Museum, and Roman Amphitheatre of Cagliari are close to the display of artworks and and will cap off your day nicely.