Always nice to see how the Railroad Barons lived. Here is a virtual tour of the Mitchell Mansion in Milwaukee...........now a private club. Membership runs about $2500-3000 a year if your interested.
https://www.wisconsinclub.com/tours/virtual-tour-of-the-mitchell-mansion-328.html
At least MoP used their el Grande Heffe's house as an in-house training center and retreat. (Kennett's Castle/Selma Hall)
Santa Fe had something similar until they moved their training to USC. Maybe DC rememembers or heard something about that.
Our community is FREE to join. To participate you must either login or register for an account.