Anything from the 18th century to mid 20th century. They have the best selection of period paintings. (18th c. European to 20th c. American) The Lake Forest store is larger than the Mart so there are more paintings. The Mart Store is smaller but carries more period furniture & really nice smalls. 15th floor is open ""To the Trade only"" but Crescent Worth can collect sales tax. Public can buy there. Only open M-F though.
Pros: Lake Forest Shop is near Metra stop & has large range of prices.
Cons: Merchandise Mart (1536) only open M-F ""to the trade""