DULUTH — Holiday visitors to Glensheen mansion this year have full access to the tree-filled and candlelit 39-room home and its vintage nativity scenes, family ornaments and party place settings. The mansion’s current keepers say they want visitors to experience the house the way Chester Congdon’s family did. While the turn-of-the-century estate on Lake Superior sees its most traffic in July and August, its holiday display gives the historic home another boost of visitors before settling into the quieter period — which lasts through the coldest months. “Until you can see grass again,” said Glensheen’s marketing director, Mike Mayou. A late-year visitor boost is a trend among local businesses and attractions that lean into the holiday season — either by…
