#34 TIKTAK Galilei – Next Level Residential Street

Episode #34 focuses on the TIKTAK Galilei project. In the summer semester of 2024, 23 students participating in the master’s elective module City and Landscape redesigned Galileigasse in Alsergrund: a residential street was transformed into a pedestrian zone. One year later, we celebrate winning the Austrian Mobility Award 2025 in the category Child-Friendly Traffic System! This milestone is the perfect occasion to look back at the project together.

For this discussion, Lena Hohenkamp (ifoer) invited Jan Gartner (Raumpioniere), Ronja Gelf (Master in Spatial Planning), Katrin Hagen (Landscape), Philip Krassnitzer (formerly LA 21), and Alexandra Weber (Master in Spatial Planning). Together with our guests, we talk about how the project was implemented, the challenges encountered, how a residential street became a pedestrian zone, and the opportunities that such temporary transformations offer.

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Jan Gartner is the founder and managing director of Raumpioniere, an agency that supports innovative projects in placemaking, tactical urbanism, urban development, and citizen participation. He studied spatial planning at TU Wien and brings his expertise to the development and implementation of sustainable, community-oriented urban spaces.

Ronja Gelf initially studied architecture (B.A.) at the University of Applied Sciences Aachen and worked there in an architectural office since 2019. In 2023, she began her master’s studies in spatial planning at TU Wien. Her experience as a personal assistant for people in wheelchairs sharpened her sensitivity to intersectionality and social justice and strengthened her commitment to always include marginalized perspectives in planning processes.

Katrin Hagen is a Senior Scientist at the Department of Landscape Architecture and Landscape Planning at TU Wien. After completing her diploma at TU Hannover, she worked as a planner in Vienna and Andalusia. Since 2006, she has been at TU Wien, where she earned her PhD in 2011 on climate change adaptation and open space quality. Her teaching and research focus additionally on innovative and co-creative implementation processes. She currently leads the research project CoCoNet – Co-creative Cohabitation Network (DUT).

Lena Hohenkamp has been a research associate at the Department of Local Spatial Planning at TU Wien since 2022. In her dissertation, she explores tactical urbanism and placemaking from a care perspective, examining related questions of appropriation, care, and social responsibility.

Philip Krassnitzer studied spatial planning at TU Wien and subsequently worked as a project assistant and later as an external lecturer in the research units Ifoer and Region. Since September 2024, he has been a praedoc in the Spatial Research and Spatial Planning group at the University of Vienna. His research focuses on understanding and communicating complex spatial relationships and transformation processes at the local and regional level.

Alexandra Weber is studying for a master’s degree in spatial planning at TU Wien. Originally trained in art and design (HTL), her focus shifted in 2020 to integrative spatial planning in public spaces, with special emphasis on climate change adaptation, urban nature, health promotion, and active mobility.

Credits – Episode #34
Concept and hosting: Ronja Gelf, Alexandra Weber, Larissa Benk, Lena Hohenkamp
Recording, audio, and editing: Lena Hohenkamp
Photo credits: Lena Hohenkamp

ZUKUNFT STADT Podcast – Production:
Lukas Bast, Larissa Benk, Lisa-Marie Kramer, Lena Hohenkamp, Madlyn Miessgang, and Nico Schleicher

Intro music: Jakob Kotal

The podcast ZUKUNFT STADT is a project of the Faculty of Architecture and Spatial Planning at TU Wien. It is produced through a collaboration between the future.lab and the Department of Local Spatial Planning at TU Wien.