The sea-bathing resort Westend was founded in 1895 by the industrialist and 'king of the tramways' Edouard Otlet with the consent of King Leopold II. Edouard Otlet's architect, Alban Chambon, drew up the first master plan and built several cottages, including the Westend H䴥l. His son, Paul Otlet, a famous bibliographer and internationalist, took charge of urban development in 1901. Octave Van Rysselberghe, a talented Art Nouveau architect, drew up the new master plan for Westend. He also designed several villas, including his masterpiece, H䴥l Bellevue. Paul Otlet and Van Rysselberghe sought to develop a model Art Nouveau garden city in Westend consisting of cottages and villas. In fact, Westend is one of the few garden cities actually realised in Belgium. That, along with the architectural quality of the cottages and villas, makes it a particularly interesting case in the development of coastal tourism in the Belle ɰoque. This article examines how Westend, in a uniquely organic manner, absorbed the international influences of regionalism, Art Nouveau, and the ideology of the garden city. It highlights the convergence of regionalism, nationalism, and internationalism in the urban development of Westend. First, these forces are related to the phase in which Chambon was the master planner (1895-1901). Then they are discussed in relation to the master plan of Van Rysselberghe (1902-1903). And thirdly, they are discussed in relation to the cottage architecture in Westend and the period after the Otlet family.