Jaume Plensa, sculptor: 'A stone can represent the universe. A boulder that nature has created'

Jaume Plensa works on an unprepossessing industrial estate in Baix Llobregat, a suburb west of Barcelona, the city where he was born in 1955. He has lived abroad in Paris, Berlin and New York, but has now returned to the city. He has been in this space for 20 years, moving from his previous central studio. He prefers the anonymity of this location, close to the airport and "a little apart from Barcelona's cultural life".