As we first reported in April, the craft beer bar was relocating here between Second Avenue and Cooper Square from 102 St. Mark's Place between Avenue A and First Avenue.
The larger Proletariat space will feature "a huge staple of rarely-seen beers in cans, large format bottles, and via a rotating tap selection from some of the most boutique breweries and brewers around the world."
There will also be a menu of plant-based English pub fare via Chef Ben Dawson.
You can follow @proletariatny on Instagram for updates. Opening hours: 5 p.m. to 1 a.m.
No. 21 was previously Porsena.
Image via Proletariat