Show Grid Guide

Tammany Hall

Project Type



Est. 2018


Union Square, NYC


Liberty Theatres
"This is a gift to the city. …masterful. "
NYC Landmarks Preservation Commissioner

The unassuming hipped roof of the former headquarters of Tammany Hall on Union Square will soon turn to glass and terra cotta and grow to support an unconventional shell-like dome, as approved—unanimously—by the NYC Landmarks Preservation Commission. BKSK conceived this expansion to be deeply respectful, and expect it to be applauded by many as both reverent and intriguing. As a preservation approach, it is designed to yield unexpected insight about the building’s hidden social history. It seeks to reframe the tainted legacy of the defunct Tammany political organization by recalling symbols from its inception as a social club that promoted nation-building ideals of the Revolutionary War period. The dome is meant to be both evocative and respectful of the building’s past while also bringing architectural spectacle to this rather staid corner of Union Square.

See the sparkly new glass dome coming to Union Square,” Time Out New York, Feb 2017
New Renderings/Video of BKSK’s Dazzling Commercial Diagrid Dome Coming to Union Square,” CityRealty, Jan 2017
Grafting an Expansion on a Landmark,” AIANY In the News, Aug 2016
Tammany Hall’s next life? A six-story retail and office building,” The Real Deal, Jul 2016
Tammany Hall’s Auditorium, Where Politics Once Took Center Stage, Will Be Demolished,” The New York Times, Jul 2016
Welcome to the Tammany dome: Add-on O.K.’d,” The Village, Mar 2015

Edifice Real Estate Partners, owner’s rep; Higgins Quasebarth & Partners, preservation strategy; Beckelman+Capalino, community relations; Weidlinger Associates, structural engineering; Dagher Engineering, MEPS; Buro Happold, exterior envelope engineering; OLA Consulting Engineers, energy and commissioning services; Atelier Ten, exterior lighting design; RA Consultants, geo-tech