The City of Nightmare. It's a little more dangerous than the others.

[An understatement given how rife it is with danger. But Dio occupies a higher place on the food chain already by virtue of what he is let alone his abilities with The World. And really, where else is he going to be? With around twenty-one hours of no sun per day and the rampant interest in the occult that could possibly provide Dio with a means of returning and finishing what he started, this place is a safe haven and a perfect place to begin his empire.]

You'll find that most of the people here try to avoid it.