Austrian Researcher Frightened at PS Archives in Brussels

An Austrian researcher reported being quite frightened during a visit to the archives at the headquarters of the Belgian Socialist Party (PS) in Brussels, according to a report by La Libre Belgique. The incident has drawn attention to the party’s vast and labyrinthine archival holdings, which span an extraordinary 2.2 kilometers when laid end-to-end.

The Incident

The researcher, whose name has not been publicly disclosed, was exploring the basement archives of the PS headquarters on Boulevard de l’Empereur in central Brussels when she became frightened. The building, a historic structure incorporating the Anneessens tower — a remnant of Brussels’ 13th-century city walls — houses the party’s extensive collection of historical documents in what La Libre describes as “labyrinthine basements brimming with unknown treasures.”

The story is part of a broader series by La Libre Belgique titled “Ce que racontent les sièges des partis” (What the Party Headquarters Tell Us), which explores the historical and symbolic significance of Belgian political party headquarters. The series, launched on July 20, 2026, has already examined the headquarters of Ecolo and the Mouvement Réformateur (MR).

The Archives: A Hidden Treasure

The archives are managed by the Institut Émile Vandervelde (IEV), the PS’s research center, which has been collecting documents related to economic, political, and social issues for nearly 50 years. Created in 1944, the IEV is the first institution of its kind in Belgium and served as a model for similar research centers across the political spectrum. Its library and archives were officially recognized by the French Community of Belgium in 1995.

The collection spans the 19th to 21st centuries and includes documents related to the Belgian workers’ movement, the socialist movement, and broader European political history. The PS archives page notes that the IEV’s documentation department is “heir to the National Institute of Social History founded in 1937 at the initiative of Prévoyance Sociale,” with a mission to salvage, conserve, classify, and promote the archival heritage of the workers’ movement. The sheer scale of the holdings — 2.2 kilometers of shelving — makes the archives one of the most significant repositories of socialist history in Europe.

A Building Steeped in History

The PS headquarters itself is a site of considerable historical significance. Located at Boulevard de l’Empereur 13, the building sits adjacent to the Anneessens tower, one of the best-preserved remnants of Brussels’ first city wall from the 13th century. Laurent Pham, Secretary General of the PS, told La Libre: “This tower was the rampart around Brussels since the 13th century. We are the rampart that protects the Belgians.”

The party moved to this location in the 1960s, having previously been based at the historic Palais du Peuple on Place Stevens, which served as the headquarters of the Belgian Workers’ Party (POB). The Parti Socialiste traces its roots to the POB, founded in 1885, making it one of the oldest political movements in Belgium.

International Scholarly Interest

The presence of an Austrian researcher at the PS archives underscores the international significance of the collection. Austria has a strong tradition of archival science, and the researcher’s visit suggests that the PS archives contain materials of value for transnational research on European social democracy, labor history, and comparative political movements.

Joffrey Liénart, historian and archivist at the IEV, and Fabienne Benmohar, librarian and documentalist, are responsible for maintaining and providing access to the collection. The archives are open to researchers by appointment at the IEV’s library on the ground floor of the Institut.

Cohabitation with Vooruit

The article also notes an “unprecedented cohabitation” between the French-speaking PS and Vooruit, the Flemish socialist party. This shared space arrangement reflects the evolving relationship between Belgium’s two main socialist parties, which split along linguistic lines in 1978 but continue to share certain facilities and historical resources.

What’s Next

The full details of what specifically frightened the researcher remain behind La Libre’s paywall, but the incident has highlighted both the scale and the somewhat daunting nature of the PS’s archival holdings. For historians and researchers, the archives represent an invaluable resource for understanding Belgium’s political and social history — even if navigating them can be an intimidating experience.

The series “Ce que racontent les sièges des partis” continues to shed light on the physical spaces where Belgian political power has been exercised and preserved, offering readers a rare glimpse behind the facades of the country’s most important political institutions. As the series unfolds, it promises to reveal more about the hidden histories contained within these party headquarters — and the researchers who brave their labyrinthine corridors.