Catwalks are called that because you have to pussyfoot along them...har har har. Seriously, here's Atomica's rather limited def.:
A narrow, often elevated walkway, as on the sides of a bridge or in the flies above a theater stage , which leads me to ask: flies? Jo? (I am delighted to see you back here, btw!
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Helen, I'm not sure that I've seen the kind of exterior "hallways" you're talking about. The only thing I can think of is fire escape. What we call housing projects here are called council estates in England.
Emanuela (lovely to see you, too, my friend), I was interested to see that the U.S, isn't the only place where a poor, inner-city area has gotten refurbished and become popular--and of course, more expensive. I know of a certain part of Chicago (as do you!) is, as is the Butchertown neighborhood in Louisville, so called because it's near the stockyards.
