EXCLUSIVE: Massive eatery Grand Brasserie to open at Grand Central in former City Winery space

The year’s biggest restaurant story — at least by square feet — hid in plain sight for six months.

The massive new Grand Brasserie will open next week in Grand Central Terminal’s Vanderbilt Hall, replacing City Winery. The huge construction project unfolded behind a curtain for months without an inch of media coverage — even though a Grand Brasserie sign was clearly visible on top of it.

The Rockwell Group-designed venue spans nearly 16,000 square feet. It’s the creation of Rick Blatstein, who recently sold his OTG eatery empire with 350 locations in US airport terminals and launched a new company called Vizz Group, according to MTA spokesman Aaron Donovan.

“Vizz Group comes to Grand Central with a depth of experience in developing and managing restaurants,” Donovan said.

When reached by The Post, Blatstein said he preferred not to share too many details until the Brasserie is fully up and running. But he said the menu will be a popular French format and the place would operate daily from 5:30 a.m. until 2 a.m. — the entire time the terminal is open.