339 Lafayette Street, Activist building in NoHo, Manhattan, United States.

339 Lafayette Street, officially numbered 339-345, is a building in NoHo completed around 1920 and nicknamed the Peace Pentagon. It is a multi-floor office building whose rooms served as headquarters for left-wing and radical activist organizations, including the War Resisters League and Paper Tiger Television.

The War Resisters League purchased the building in 1974 and established it as a center for political organizations. Later, the A.J. Muste Institute took over management and continued this mission for decades afterward.

The building became known as the Peace Pentagon because numerous social justice and anti-war organizations filled its floors with their work. Walking through the hallways, you could see the names of different activist groups sharing the same address.

The building stands at 339-345 Lafayette Street in NoHo, at the corner of Bleecker Street, a short walk from the Broadway-Lafayette Street and Bleecker Street subway stations. It was not closed in 2015: in October of that year it was sold to 337 Lafayette L.P., a holding company owned by developer Aby Rosen, and the address remains in use.

The building maintained below-market rental rates for politically aligned groups for many years, making it a rare refuge for activists. These low rates allowed smaller organizations to survive and grow without financial strain.