El Anatsui’s shimmering, undulating wall sculptures made of repurposed bottle caps are uniformly stunning, but previous experience of individual pieces won’t prepare you for the Ghana-based artist’s huge installation in the Brooklyn Museum’s fifth floor galleries. Titled ‘Gli’ (Wall), sheets of aluminum and copper wire materials were inspired by visits to walled cities of Berlin, Jerusalem and Notsie (in Togo) but offer a delicate and diaphanous take on the idea of barriers. (Through August 4th).