Octavia E Butler had a vision of time as circular, giving meaning to acts of courage and persistence. In the face of social and environmental injustice, setbacks are guaranteed, no gains are made or held without struggle, but societal woes will pass and our time will come again. In this sense, history offers solace, inspiration, and perhaps even a prediction of what to prepare for.

The Time Portals exhibition, at Furtherfield Gallery and online spaces, celebrates the 150th anniversary of Finsbury Park. As one of London’s first ‘People’s Parks’, designed for free movement and thought, it is the perfect location to create a mass investigation of radical pasts and futures, circling back to the start as we move forwards.

Each artwork invites audience participation – either in its creation or in the development of a parallel ‘people’s’ work – turning every idea into a portal to countless more imaginings of past and future urban green spaces and beyond.