In the mid-1930s, international exhibitions operated in a climate shaped by economic recovery and mounting political tension. World’s fairs increasingly balanced confidence in technological progress with narratives of stability, national capacity and global reach.

Brussels returned to the exhibition stage in 1935. Officially titled “Exposition Universelle et Internationale de Bruxelles 1935,” Expo 1935 Brussels was held from April 27 to November 6, 1935, on the Heysel Plateau in the northern part of the city. The event reaffirmed Brussels’s position as a recurring host within the Expo tradition while introducing a new exhibition district that would define the city’s future role in international fairs.

Organized during a period of gradual recovery from the Great Depression, the exposition was conceived as a demonstration of modern capability and international engagement. Belgium sought to present itself as a technologically advanced nation while emphasizing its overseas connections at a time when colonial economies remained central to national development strategies.

The exhibition grounds covered approximately 150 hectares on the Heysel Plateau, a site selected for its capacity to accommodate large-scale development beyond the historic city center. The layout combined permanent and temporary structures organized into thematic zones, including national pavilions, colonial exhibits and sections devoted to science, industry and the arts. This spatial organization reflected accumulated experience from earlier fairs while prioritizing clarity of circulation and comparative display.

Architecture played a defining role in shaping the exposition’s identity. The most prominent structure was the Palais des Expositions, designed by Joseph Van Neck. Executed in an Art Deco style with a monumental façade, the building signaled a shift toward modern architectural expression and was conceived as a permanent exhibition venue. It remains today as part of the Brussels Expo, anchoring the Heysel area as a long-term exhibition district.

International participation included 25 countries, among them major European nations, the United States and several non-European participants. Each country constructed its own pavilion, often drawing on national architectural idioms to communicate identity, technological achievement and cultural distinction. This reinforced the exposition’s function as a platform for national comparison and representation.

A central component of the exposition was its colonial section. Displays devoted to the Belgian Congo emphasized transportation infrastructure, raw materials and economic development, presenting colonial enterprise as integral to national prosperity. These exhibits reflected prevailing imperial ideologies of the period and have since become focal points for critical reassessment of the exposition’s narratives and assumptions.

Transportation and technology emerged as dominant themes. Exhibits showcased advances in railways, automobiles, aviation and maritime systems, framing mobility as a cornerstone of modern life. Scientific and industrial displays were complemented by art exhibitions, cultural performances, conferences and sporting events, creating a comprehensive environment that combined instruction, diplomacy and leisure.

Public engagement was considerable. The exposition attracted approximately 20 million visits over its six-month run, confirming its success despite the unstable political climate of the era. The scale of attendance reinforced Brussels’s reputation as a capable host city and validated the strategic development of the Heysel Plateau.

Expo 1935 Brussels left a lasting legacy. The permanent exhibition buildings established the Heysel area as a central node in Brussels’s international exhibition infrastructure, later enabling events such as Expo 58. More broadly, the exposition illustrated how interwar Expos blended technological optimism with colonial narratives and geopolitical positioning.

In this way, Expo 1935 Brussels represents a mature phase of the interwar Expo tradition. It combined modern architecture, large-scale planning, and international participation while reflecting the political and economic realities of a world moving steadily toward conflict.