Every year, I try to make one or more study trips to foreign cities. Sharing knowledge and experiencing a new system for yourself is very important (and fun). It allows me to have more in-depth conversations with experts and policymakers afterwards.
My first study trip to California in 2012, to see how the West Coast dealt with the introduction of electric transport, was just legendary.
Since then, I have been to Stuttgart, Cologne, Paris, Bilbao, London, New York and Los Angeles, trying out new cycle lanes (LA), recently expanded underground networks (Paris) and many other innovations. Although the systems, languages, and cultures differ, the essential questions are the same everywhere.