Location from Curse of Strahd by Tracy & Laura Hickman, Chris Perkins / Wizards of the Coast
Lady Wachter's estate in Vallaki — a house of secrets where cult meetings masquerade as book clubs, a mad daughter crawls in the attic, and a dead husband lies preserved in the master bedroom.
Also known as: Wachterhaus, Wachter estate, Lady Wachter's house