Marshall Field

Merchandise Mart unveils $40 million renovation

Merchandise Mart unveils $40 million renovation

The evolution of the Merchandise Mart from old-school showroom center to high-tech office space has leaped forward with the completion of a $40 million renovation of the ground-level common spaces.

The 86-year-old building — once the world's largest — increasingly has become a magnet for companies seeking an urban millennial talent pool and a lot of open space. About 25,000 people pass through the building daily.

"Our building, the Mart, has become the epicenter of what is this extraordinary resurgence of River North in Chicago," said David Greenbaum, president of New York-based Vornado Realty Trust, which has owned the building since 1998.

At the...