While pavilions might appear a luxury, I would argue that in our busy, frenetic urban lives we need places to relax, to learn and to have conversations more than we have ever done so before. We should cherish these special places. There are 38 Listed pavilions across Greater London, and the international charity, World Monuments Fund, has highlighted many that need protection, including Oscar Niemeyer’s extraordinary International Fairground in Tripoli, Lebanon, designed exactly 40 years before his 2003 Serpentine Pavilion.