The claim "The buildings in Brussels are grey" is a sweeping generalization about the city's architecture. There is some basis for the observation: Brussels has a significant amount of post-war modernist and brutalist architecture, particularly in the European Quarter, where office buildings from the second half of the 20th century were described as "grey concrete architecture of the bureaucratic consensus." Brussels's brutalist buildings prominently feature raw grey concrete. However, the claim is an overgeneralization. Brussels is widely celebrated for its architectural diversity and color: the Grand-Place (a UNESCO World Heritage Site) features ornate Gothic and Baroque guildhalls with gilded decorations; Brussels has nearly a thousand Art Nouveau buildings with richly colored facades and materials; the Atomium is a shiny chrome structure; and many historic buildings use stone in varied tones. The claim is partly accurate (some buildings, especially in the EU Quarter, are indeed grey concrete) but materially misleading as a general characterization of the entire city's architecture. Sources: - Visit.brussels, "Architecture in Brussels" — https://www.visit.brussels/en/visitors/what-to-do/achitecture - Visit.brussels, "Brutalism: six gems for fans of architecture in Brussels" — https://www.visit.brussels/en/visitors/plan-your-trip/brutalism-6-gems-for-fans-of-architecture-in-brussels - UNESCO World Heritage Centre, "La Grand-Place, Brussels" — https://whc.unesco.org/en/list/857/ - UNESCO World Heritage Centre, "Major Town Houses of the Architect Victor Horta (Brussels)" — https://whc.unesco.org/en/list/1005/ - We Love Brussels, "Architecture of the EU Quarter in Brussels" — https://welovebrussels.org/2021/10/architecture-of-the-eu-quarter-in-brussels/