After the tour there was only one thing to be done - I had to go to the Oyster Bar for lunch. I knew it was what Harvey would have done, only he would have had the raw oysters, whereas I got the oyster stew - really a creamy soup with a modest number of oysters in it, but perfectly delicious, especially with a slightly oily, fragrant glass of Californian sauvignon blanc. Harvey would have been proud of me.