In "Power Tower" the artist completed a walk in Upper Town based on a pre-determined route. The route covered an area in Upper Town that existed in the Middle Ages and that was taken by many former residents of Upper Town on a daily basis. This route is also where most of today`s administrative buildings of Zagreb and Croatia are located, and as such is heavily controlled by CCTV cameras. While walking this route, the artist avoided as much as possible the unwanted control imposed by CCTV, by walking under or behind the cameras, on the other side of the street, in the middle of the street, glued next to the wall, etc. At the same time, the audience located in the belvedere of the Tower of Lotrscak, warned the artist ­ through the ringing of a bell ­ when they saw a human threat approaching. This function was similar to the way the Tower was used in the Middle Ages when a group of watchers observed through a telescope the dangers surrounding Upper Town and warned the residents against them through the ringing of a bell. Once the artist heard the bell in the performance, she immediately switched the tracking function on her phone, making herself visible to the audience ­- as a moving object on a map, as well as walked towards and stood in front of the CCTV cameras, making herself visible to them too. The performance, which is part of Kovacevska`s developing multi-city project "The Walking Project" (www.thewalkingproject.net) explores surveillance from a three-fold perspective: past and present, old and new mechanisms, control and care function.