For some reason, people in Europe back in the 60s believed that creating dense housing only units with no sense of scale, long commutes and walks and 100% car dependence was the way forward.
That experiment backfired almost everywhere. Some of these homes, both in Eastern and Western Europe are well connected via public transport, integrate commercial and residential zones and are fairly nice to live in. Most, however, are simply unhealthy for both the planet and the residents.
It's great to live in dense places; but its benefits are countered by huge, empty plazas that take 15 minutes to cross if I just want to walk to the next corner store.