The brussels airport termınal built in the late 1950s was designed by a trio of belgian architects - Maxime Brunfaut, Geo Bontinck and Joseph Moutschen. The three of them are representatives of the belgian tradition of regional diversity..The development and expansion of the Brussels Airport has been a complex process, driven by the market curve. That is why you can see so many remnants of different eras and buildings with different architectural styles. in the 1990s two new terminal, Pier1 and Pier 2, were constructed. The first one incorporates and preserves parts of the original building from the 1950s. The second terminal is used for transoceanic flights and flights to non-Schengen countries.