The big news out of Berlin this year is the opening of the $3.4 billion Berlin-Brandenburg International Airport, set to make its debut on June 3rd. However, I’m more excited at what Berlin did with its former airport, Tempelhof, which is now the vast Tempelhofer Freiheit public park. Families come to bike and roller blade on the old runways and picnic on the grounds. Germany has always been at the forefront of reclaiming former industrial spaces and transforming them into parks. Landschaftspark in Duisburg-Nord is a former coal and steel plant that now features a high ropes course. It’s wonderful to see urban designers blurring the line between civilization and nature to create parks from former contaminated sites, landfills, abandoned manufacturing plants, and older airports.