This lovely little collection of buildings was the headquarters of the original Assassin Order of the Colonies- a modest Masyaf, if you will. Sometime during the Seven Years' War the Templars made their move and destroyed it during the Assassin witch hunt. By which I mean there was a witch hunt for Assassins, not that there were Assassin Witches.
Achilles survived the attack and stuck around to keep the manor standing...barely, by the looks of it. Once Connor came along it flourished again for several decades, even surpassing its former glory. Then it suddenly vanished early in the 19th century. Any manor that can suddenly vanish is both interesting and unsettling in the same measure, though probably not a great investment.