The Sonnabend Gallery opened in Paris in 1962 and was instrumental in making American art of the 1960s known in Europe, with an emphasis on American pop art. In 1970, Sonnabend Gallery opened in New York on Madison Avenue, and in 1971 relocated to 420 West Broadway in SoHo where it was one of the major protagonists that made SoHo the international art center it remained until the early 1990s.
The Sonnabend Gallery's establishment in Paris in 1962 marked a significant turning point for American art of the 1960s, making it more visible and recognized in Europe. Its subsequent expansion to New York on Madison Avenue in 1970 and relocation to 420 West Broadway in SoHo in 1971 cemented its role as a key player in shaping SoHo into a renowned international art center until the early 1990s.