“High Spirits” is a multi-layered title: the caricaturist Thomas Rowlandson (1757-1827) was himself a heavy gambler and a heavy drinker, continually using up his material assets in such pursuits. His high spirits extended to the Georgian society he satirised with such robust good humour; high society and even low society attracted his interests, while he also expended enormous energy detailing political and sexual intrigues.

What is it about Vermeer? Just mention the name and there will be queues around the block. It’s true that there are a handful of other artists with that charisma, but none so rare as Vermeer. The Girl with a Pearl Earring is not only the subject of a recent novel and a film, but also a kind of poster for Holland as a whole, and the star of the recently reopened Mauritshaus in the Hague. At the Rijksmuseum in Amsterdam you can hardly see the handful of Vermeers for the crowds.

At first glance David Stewart’s Five Girls 2014, the winning entry in this year’s Taylor Wessing Photographic Portrait Prize, is a very ordinary scene. Five young women sit behind a table, obligatory mobile phones within reach and lying amongst the remains of a rather dismal-looking lunch. They’re not looking at each other, and nor are they looking at us – in fact they are not even looking at the same thing: they embody the disengagement we like to insist is the malaise of the young.

Every object tells a story, nowhere more so than in a museum. The Victoria & Albert has been busy retelling as many stories as it can by rearranging, refurbishing, adding and subtracting from the millions of objects it has at its disposal to display, study and conserve.

Chairs, chairs, chairs, as far as the eye can see. Plywood or plastic shells, some decorated with hilarious drawings of jolly nudes by Saul Steinberg (main picture), others in all the colours you can imagine – stacks, in rows, alluring and all so familiar. As it is an exhibition, there is an air of reverence – heaven forbid that you actually have a chair to sit on! - but these chairs have been design icons for well over half a century.

Every summer at the BBC Proms the world's greatest conductors are captured in the waiting lens of Chris Christodoulou. His official portraits are sent out to the press straight after most concerts. But at the end of the two-month festival he supplies theartsdesk with action shots snaps which the maestri may perhaps not choose to stick on the mantelpiece. For the sixth year running, we publish them here (click on some previous galleries in the sidebar). Feast once again on images of flying hair, glistening foreheads, popping eyeballs, gurning gobs and helicopter arms.

The most celebrated reportage to come out the Vietnam War was Michael Herr’s Dispatches, rightly acclaimed as the most visceral journey into the dark heart of America’s first military defeat. But unlike all wars before it, Vietnam was a genuinely visual conflict, brought into the homes of the public via television and photojournalism. And among its most accomplished witnesses were two British photographers. The one everyone has heard of is Don McCullin, but his work was matched picture for picture by the Magnum photographer Philip Jones Griffiths.

There were female pioneers of photography before Christina Broom, most notably Julia Margaret Cameron. And others have hidden their light under a bigger bushel: Vivian Meier's body of work remained stashed away only to be discovered after her death. Broom's importance is partly one of timing: she prowled the streets of London at a time of great historical significance. As suggested by Soldiers and Suffragettes, the title of a new exhibition and book celebrating her work, she was a witness to the struggle for universal suffrage and the First World War.

Punchdrunk entered the world of theatre through a side door in the basement. The company navigated a strange path around abandoned warehouses on the edge of town, via the odd wrong turn and sundry culs de sac, and fetched up two years ago at an old Royal Mail sorting office next to Paddington station. It was here that they performed The Drowned Man: A Hollywood Fable.

I had never really photographed landscape. But I spent many wonderful weekends in Suffolk and Norfolk along the coast. This project began when I just decided to photograph the sea in a very abstract way. The sky and the light and the flatness were quite inspiring for me.