"The Louvre'' (mixed media), by Donna Ingemanson, in the "Sightlines'' group show at the South Shore Art Center, Cohasset, Mass., through Dec. 22. The gallery says that while this piece has no obvious "sightline," unlike some other work in the show, it has a layering of various elements to draw eyes down to the bottom of the piece, where there sits a sketch of the Louvre itself. (See the famous I.M. Pei pyramid in front of the museum.) The show's works offer many different conceptions of sightlines and horizons.