The Shake Shack in Madison Square Park reopens Wednesday. View Full Caption Shake Shack

FLATIRON — Shake Shack is back in the park.

Shake Shack's original Madison Square Park outpost, which closed for renovations in October, is set to reopen at 11 a.m. on May 20, the burger chain announced.

To celebrate, the shack will offer a special bacon cheeseburger with cave-aged Jasper Hill Farm raw cow's milk cheese sauce and Niman Ranch bacon, the company said.

It will also debut Brooklyn Brewery's Shack Phoenix beer to celebrate Shake Shack's virtual rise from the ashes.

The Shake Shack previously told DNAinfo New York that the eatery, which was initially scheduled to reopen this past winter, would largely look the same from the outside.

Renovations to the outdoor restaurant, which ended up closed for more than six months, included overhauling its kitchen and building a basement for extra storage space, the company told DNAinfo before it closed.

The Madison Square Park Conservancy, a nonprofit that maintains the 7-acre park, paid $750,000 to build Shake Shack more than a decade ago. Danny Meyer, the owner of the chain, is also a founding board member of the conservancy.

To lease the space, Shake Shack pays a percentage of its revenue to the city and the conservancy.

Shake Shack wouldn't immediately disclose how much was spent on the renovation.