James J Hill House Dining Room. The grand mahogany table has 17 leaves, it can extend to 25ft! There's hand-tooled embossed leather wall coverings, gold-leaf coffered ceiling, silver safe, China Closet/Butler's Pantry secret door, and great Renaissance mahogany panelling. The woodwork and finishing, including Virgin Islands mahogany sideboard and cabinets, cost nearly $10,000. The dining table, side table, clock case, mahogany screen, and 16 mahogany chairs cost almost $3,300.