Plexiglass came late to British sculptor Sir Anthony Caro. Aged 87 and already renowned for his innovating use of different materials and shapes, Caro became fascinated by the indestructibility and infinite colour possibilities of the acrylic material. Several fine examples of Caro’s plinthless steel and plexiglass structures are now on view at Mitchell-Innes & Nash. They show Caro’s dedication to form, high regard for architecture and a keen understanding of colour which was sharpened by his marriage to British painter Shiela Girling. The exhibition is accompanied by a series of beautiful works on paper that show the artist’s ability to develop three dimensionality on a single plane of paper and which served as inspirations for his later work. Through February 4.