Charles Jencks’ “wriggly earth bank set around three sinuous ponds, which transformed a flat patch of scrubby grass in front of the Scottish National Gallery of Modern Art in Edinburgh, has won the £100,000 Gulbenkian museums prize, the richest single prize in the arts. The £380,000 design, Landform is based on chaos theory. Loved by visitors almost to destruction in less than two years, parts have had to be returfed already. Jencks’s inspiration was La Grande Jatte, Seurat’s painting of a Paris park.”