Part of the thinking behind the Barbican's somewhat hidden entrances to the estate and tts maze-like layout was that they would reduce foot traffic, and it totally worked. Not many people use the public estate high-walks as a shortcut to get across the City. This has a wonderful effect wherein you're surrounded by the hustle and bustle of the City, while being just a touch insulated from it.

I lived there for the better part of a year and it completely changed my perspective on living in London. More city-life should be like the Barbican.