Famous Women/Orlando at Charleston review – the fundamental daftness of Grant and Bell

A jokey Famous Women Dinner Service and a faint celebration of Woolf’s novel Orlando are lightweight openers for the Bloomsbury Group shrine’s spacious new galleries

A Letter from Paris by Louisa Deasey review – hidden art, lost romance and family reclaimed

A message out of the blue about an unknown affair triggers a family quest

Elizabeth Siddall: pre-Raphaelites’ muse finally gets her own voice, 150 years after death

Best known as the model for Millais’ much loved Ophelia painting, a new book hopes to foreground her own work as a poet

Brazil National Museum: as much as 90% of collection destroyed in fire

Building was not insured, the museum’s deputy director said, but some pieces survived including the Bendegó meteorite

Ruskin the radical: why the Victorian thinker is back with a vengeance

He believed life should be beautiful, inequality was an outrage and that capitalism leads to aesthetic degradation. No wonder the quintessential Victorian speaks so powerfully to our times

Good inking: the novel rise of literary tattoos

As wordy designs become all the rage, a pop-up tattoo studio at Melbourne writers’ festival is inscribing idiosyncratic sentiments into the skin of ardent book fans

The Observer’s ultimate guide to autumn culture

A musical Twelfth Night, Michelle Obama’s memoirs and the last ever gig by Ennio Morricone: our critics preview the new season

Mary Beard returns to TV with ‘exploration of nakedness’

BBC Two show will follow her journey exploring the history of the naked body in art

John Calder obituary

Publisher and bookseller who championed some of the great avant-garde writers of the 20th century

Days of la dolce vita: Claude Nori’s images of Italians on holiday

The French-Italian photographer captures people soaking in the sensuality of Mediterranean beaches

National Portrait Gallery buys painting of young Dylan Thomas

Cherubic painting by the Welsh poet’s friend Augustus John has been acquired for £214,750

How amateur sleuths finally tracked down the burial place of William Blake

On the 191st anniversary of his death, fans and artists will unveil new headstone and pay homage to poet’s work

From EM Forster to Mamma Mia! Why we can’t resist the Mediterranean

Sunshine, sensuality, and a dash of danger... the ‘warm south’ has fascinated writers and artists for hundreds of years. But why are the Brits so obsessed?

Branching out: why artist Andy Goldsworthy is leaving his comfort zone

In a new film, Goldsworthy climbs trees, walks through hedges and creates a house from boulders. Is this his most challenging work yet?

Magical German art, punk protesters and Edinburgh curiosities – the week in art

Hard-hitting works by Weimar iconoclasts, Yoko Ono lends support to Pussy Riot, and Lucy Skaer explores the desire to collect