Tarte Tatin is an entry for Tartu Downtown Cultural Centre international architectural competition. It yielded the 2nd prize among 102 participants. The complex program for the building contains a museum, a library, a cinema, an event centre with two halls, a restaurant and offices. Tarte Tatin is an apple pie baked with apples as a bottom layer. When served, it is reversed. Our design had a process of a generation that had similar steps. Finally, it packed well into an Escherian zigzagging structure extending above the park. We propose a building that has a minimal footprint at the street level, thus leaving the ground for the park. It is a meeting point for the park landscape, roofed outside public space, public inside space (foyer) and the spaces for cultural services. We reveal the foundations of the buildings destroyed in World War II, which were hastily covered with the green carpet after the war. We restore the sloping riverbank to follow the trend of bringing people closer to the river. Due to the growing floor area on the upper floors, the parking area is maximized. The transparent foyer enables the park to continue into the building. The building extends above the garden creating a covered public space. The building is in the park; the park is in the building.