Has the world grown weary of art biennials? In search of an antidote, a Portuguese festival turns to anarchism

Anozero, a biennial art festival held in Coimbra's Monastery of Santa Clara-a-Nova, has opened a ghostly edition that uses installations—including Taryn Simon's sound piece of laments in multiple languages—to protest plans by the Portuguese government to redevelop the 17th-century convent into a hotel under its Revive programme. Festival co-founder Carlos Antunes threatens to cancel the biennial if the development proceeds, framing the event as a warning to the developer about the spirits that haunt the building.