Jackie's Mansion is a location featured in The Darkness II.
It's Jackie's private home where he goes to rest or get some information. Aunt Sarah and members of Jackies mob family live in the mansion too. They can be talked with in order to find out about their opinion of the current situation or some tidbits from their personal life. After Johnny Powell is brought to the mansion, a new room opens up, featuring all the relics Jackie managed to collect thus far and a Talent Shrine.
Later the mansion is attacked by the forces of the Brotherhood and wrecked in the process.