3LHDs project, Campus Borongaj, won the 2nd prize on the architectural and urban design competition for the design of the campus Borongaj in Zagreb. By planning the new Borongaj Campus we are also creating a development plan for a new part of the city, and we need to resolve two important issues: how to create a new quality part of the city and what will be a major catalyst for its development. 3LHD has proposed the creation of the concept of clusters in a green forest, clearly defining the "empty" natural areas, borders, infrastructure and hierarchy. Each cluster has a matrix and its specificity - the public space, public buildings and a formed façade. In this way we gradually develop a plan for the Green Campus Borongaj.