I have a favorite walk in London. I’ve done it many times. I think it’s my favorite because it takes about 3 hours, and it’s all free. here are a few highlights – they’re all here. you’ll probably recognize most of them, save for the third: that’s Robert Frank’s contact sheet for ‘The Americans’. I’ve visited it now 4 times in less than 2 years. it’s amazing. you should go. it’s also free. enjoy your walk. [hint: it begins at Waterloo].