What happens when your favourite proposal doesn’t win a public sculpture competition? If you’re Sandretto Re Rebaudengo, you commission it yourself. Goshka Macuga’s rocket-shaped idea for the Fourth Plinth on London’s Trafalgar Square was realised and found a home at the Palazzo Strozzi in Florence, as part of a show marking 30 years of Sandretto Re Rebaudengo buying art. Her collection, now comprising over 1,500 artworks, can be seen at her private foundations in Turin and Guarene (where she also has a sculpture park), with shows this year by Lawrence Abu Hamdan and Julian Opie, and in Madrid, where she stages exhibitions in city venues (such as Lucas Arruda’s landscapes in the library of Ateneo de Madrid). By the next Venice Biennale, she hopes to open a new space on the island of San Giacomo in Paludo, a former military garrison, as another outpost. She admits younger artists have called her ‘mamma’, but as Macuga told The New York Times, the reason artists really like Sandretto Re Rebaudengo is because ‘you know your work is going to be seen’.