bedir than
Full Moon Storyteller
It's an old house.
But not THE house of D&D. The "museum" is the first building TSR used when it grew big enough to leave Gary's house. Gary's house where D&D was developed ALSO has D&D memorabilia but doesn't host the public. It's closer to Horticulture Hall, iirc.This building is associated with Gary Gygax and perhaps the creation of D&D (if I'm getting that part right). Small museums like this converted from the homes of historically significant people are quite common.