In June 1919 writer Carl Dienstbach laid out all possible pitfalls of bringing aircrafts to cities, noting, “clearly, city streets, flanked by high cliffs of architecture, lend themselves about as well for airplane landing and starting as they do for ice-boating.” One solution to this problem: “a platform in the form of a circular, high-banked track—a track that would be constructed of light but strong iron gratings, so that sun and air would still find their way to the streets below.”