Put your map away and spin round three times -- it's time to get lost. Going off the radar in a strange city can be the perfect way to uncover its secrets, get a feel for the layout and meet the locals.
Of course, there's good lost and bad lost. It's best done on purpose, with plenty of time to spare and a sound way to get found again.
Some cities just seem to lend themselves to this kind of off-the-chart adventure. Here are six of our favourites -- and six ways to make it home again.