As both an interior design editor and a haunted house podcast host, I’m drawn to home features that are equal parts charming and downright odd. And while researching the infamous and historic Lemp Mansion in St. Louis’s Benton Park neighborhood for an episode of our haunted house history podcast, Dark House, I came across tons of fascinating fun facts about common features in old, grand homes. And by “fascinating,” I mean sometimes nostalgic and beautiful, other times, downright creepy or problematic. Once cutting-edge and all-the-rage, these features now tend to be obsolete. But they still very much tell worthwhile stories about the evolution of technology. Ahead, learn about some of…