It is the home of Don Frank Vinci. The mansion is located in Greenfield, on the outskirts of the city. It has a very long private road leading to the mansion. Around the mansion is a block and a veranda where you can see all of Empire Bay.
The building is very large and has many rooms and even a winery. Outdoors there is a swimming pool, a large garden, a large pond, a hedge maze, and an underground sewer that's accessible but has unknown purpose in the game.