If only a modest fuss is being made about the rare and prestigious loan currently residing in Trafalgar Square, it could be that the National Gallery is keen to forget the role of its former director, Dr Nicholas Penny, in a row about art transportation that centred on the very collection to which these objects belong.

The gallery walls of Tate Britain have been taken down so turning a warren of interlinking rooms into a large, uncluttered space in which Rachel Whiteread’s sculptures are arranged as a single installation. What a challenge! And curators Ann Gallagher and Linsey Young are to be congratulated for pulling off this difficult feat so seamlessly. 

James Hamilton’s wholly absorbing biography is very different from the usual kind of art historical study that often surrounds such a major figure as Thomas Gainsborough (1727-1788). Hamilton is positively in love with his subject, and writes with verve and enthusiasm, yet grounds it on vast research with primary and secondary sources, all impeccably noted.

A 19th-century silver and wood pot in which to make chocolate, pertly graceful; 17th-century blue and white Delftware; a Chinese calligraphy panel; a 19th-century carved wooden god from the Ivory Coast; a bronze and gold earth goddess from South-East Asia. These are but a tiny sampling from the multitude of objects with which Matisse surrounded himself in his studio(s).

Two performers rush down the stairs and sweep through the audience, their designer outfits splaying out as they speed elegantly around the gallery and disappear as quickly as they came. Thus begins a series of performances that are an intriguing mix of flamboyant narcissism and minimalist restraint. 

Rose Finn-Kelcey was one of the most interesting and original artists of her generation. Yet when she died in 2014 at the age of 69, she could have disappeared from view if she not spent the last few years of her life assembling a monograph about her work. It's a beautiful book that helps you appreciate the range and complexity of a practice that might otherwise be too elusive and too mercurial to grasp fully.

As a line flows or falters, registering each slight change in pressure, pause, or occasional reworking, it seems to offer a glimpse into the mind of the artist at work. The line is the instrument of the artist’s eye, the often unpolished, provisional nature of a drawing offering a spark and freshness that tends to gradually lessen as a composition is rethought and worked up in paint.

Something like a parked zeppelin sits on three mirrored legs on a museum lawn in Belgium. It’s a cigar-shaped steel fabrication that, were it to float free of its three legs, could also pass for a UFO. But given the context - a sculpture park outside Antwerp - we can rest easy. Never Mind is a work of art by Richard Deacon.

Now in its 48th year the veteran photography festival is in better shape than ever. You can walk through the French sunshine to more than 20 exhibitions, hear a talk, meet the snappers and shop on the fringe. It's not just a show; it's a holiday, reaching out to the world, this year notably, to the photographers of Colombia and Iran.

Oh those Victorians!  Hail Prince Albert whose far-sighted ambition led to Albertopolis, embracing museums, galleries, universities and the Royal Albert Hall.