Wagner was very interested in urban planning — in 1890 he designed a new city plan for Vienna, but only his urban rail network, the Stadtbahn, was built.
Wagner estaba moi interesado na achaiadura urbanística - en 1890 deseñou un novo plano para a cidade de Viena, pero só se construíu a rede de ferrocarril urbano, o Wiener Stadtbahn.