I went to a dinner last night to celebrate Brown’s Art Weekend, an initiative first established last year by Brown’s Hotel to encourage the innumerable art galleries clustered round Bond Street, many of them upstairs and normally not open at the weekend, to open for one weekend in the year.   Meanwhile, the architecture team at the RA are organising a mini-festival on Burlington Gardens.   In the long term, I hope the area can become more like Chelsea in New York whereby people go gallery hopping on Saturdays, but the galleries need convincing that this is worth doing.