Eleven years ago, steel executive John Bates set out to build an uncompromising mansion that would dwarf his neighbors’ mansions on Michigan’s Grosse Ile, a wealthy island township located 30 minutes from Ford’s global headquarters.

But Bates never finished the house, and this month decided to put it on the market—for an eye-popping $29 million. It’s the most expensive home currently on the market in Michigan.

To help put the price in context, a waterfront five-bedroom home on the same street is listed for only $1.1 million.

“Circumstances arose for the owner that caused it to not be completed in a timely fashion,” Margie Gape, an administrative assistant with the township, recently told the News-Herald.

Exterior realtor.com

When finished, the eight-bedroom, 15-bath home is expected to measure 16,855 square feet. Sitting alongside the Detroit River, the property looks largely complete on its exterior. However, Gape said, the interior is about halfway complete.

Designed as a French chateau, it features a sharply peaked roof, arched doorways and windows, and nine fireplaces.

Double front doors open to a foyer with a double princess staircase and intricate metalwork. Just off the foyer is the living room, with a double-height ceiling and floor-to-ceiling fireplace. Just beyond the living room is the formal dining room, which has a fireplace.

Foyer realtor.com

Living room realtor.com

Dining room realtor.com

The home’s most striking feature is its glass and metal conservatory, designed to cover an indoor pool and waterfall. The home also has a five-car garage, heated flooring, and private dock.

Conservatory realtor.com

Private dock realtor.com

Bates spent his entire career in steel. In the 1960s, he joined a two-man shop called Heidtman Steel, according to a 2013 profile in Metal Center News. The company grew, and began specializing in high-strength steel that it sold to auto parts manufacturers. Bates bought out his partner in the early 1980s, and took over as CEO.

Today, the company processes more than 5 million tons of steel a year.