Ianto feels occasionally like he's out of touch with the city, especially as fast as it's developing; seems like every day there's a new shop opened or a restaurant closed or some high-rise being opened. And since his (ostensible) job in the tourist office means he has to be able to tell people where things are, or what's a good place to eat, or shop, he tries to keep up. It's been a slow day and he feels like getting out, so he takes the opportunity to go for a walk, taking in the different shops and sights as he passes.