try Holmes' Continental Tours!
I've never been especially good at Geography - it was one of my worst subjects at school and there are a great many places I should probably be able to point to on a map but can't. When reading a Holmes story I rarely need geographical knowledge - Doyle (or Watson) is usually pretty precise. 'The Disappearance of Lady Frances Carfax ' however puts my head into something of a spin. It will embarrass me to admit out loud but, reading this story, I'd always assumed Lausanne to be a city in France - looking up details in 'The Canonical Compendium' (Clarkson, Calabash Press, 1999) I was surprised to see it in fact is in Switzerland. I suspect what's always thrown me is the mention of Montepellier (where the titular Lady is said to have fleed from) and also Holmes' disguise with which he surprises Watson - "an unshaven French ouvrier " complete with handy cudgel. (were there many such Frenchmen to be found loitering in Victorian Swiss cities?