Bordello!

Basically, you are running your own whore house and fighting against other players to attain the most profitable house by the end of the month (or past the end of the month depending upon how you have the door configured)! You can search for whores to work in your house (you may only have 10 at any one time), hire thugs to fight other players and to help protect your house, and many other features you will soon become very familiar with!