Who has the right to define the space of a city? In recent years, the heart of Zagreb has been the scene of various battles in which this question was posed repeatedly. History’s winners didn’t tire of leaving the monuments of their triumphs: they dug holes, built malls and erected expensive apartment buildings. To celebrate this victory, the unstoppable spread of commercialised party zones turns the streets into spaces of spectacle. Nobody can deny that the architecture of the city presents unmissable facts. But there is no building, no site that can only serve the purpose for which it was built. Therefore, the Trojan Collective offers an exercise in practical architecture criticism. It asks its participants – who can be anybody – to temporarily appropriate a space in the inner city of Zagreb by introducing new movements, gestures and usages into it. By doing so, the Trojan Collective will still remain invisible: like the ancient Greek visitors of Troy, it knows how to disguise itself, how to become invisible under the veil which covered the flaneurs of the 19th century: the masses.