In the summer of 2020, the city of Amsterdam published the Amsterdam Green Infrastructure Vision 2050: A Liveable City for People, Plants, and Animals as part of the larger (re)positioning of Amsterdam as a ‘sustainable’ city. Conceptualizing the term architectural media, this dissertation positions mediations of architecture as a key site of place-making and meaning-making, particularly in processes of urban transformation. From drawings and sketches of initial designs via virtual renderings and animations to photographs and videos to the construction itself, architecture can be understood as an inherently mediated process – and yet, these media are rarely approached as a site of negotiation. In the context of the ‘sustainable’ city, this dissertation argues, architectural media are (re)imagining urban nature(s), (re)constructing urban future(s) and (re)producing urban atmosphere(s). The individual chapters move through the architectural process to underline how becoming ‘sustainable’ and making a ‘sustainable’ city are entangled processes of imagination and realization.