Shake Shack is shaking things up with free burgers.
The modern day “roadside” burger place is opening its 100th location on Tuesday.
To mark the occasion, they’re giving away free Shack burgers to the first 100 guests.
— SHAKE SHACK (@shakeshack) August 14, 2016
The giveaway starts at 10:30 a.m.
The closest Shake Shack is located at the Inner Harbor.