72 Hour Urban Action is the world's first real-time architecture competition, where 10 international teams have 3 days and 3 nights to design and build projects in public space in response to local needs.

The teams design, build, sleep and party on site to generate interventions in public space within an extreme deadline, a tight budget and limited space. 72 Hour Urban Action invites professionals and residents to become active agents of change, from the bottom-up, and to leave a lasting impact on the urban landscape.

The first 72 Hour Urban Action competition took place in September 2010 as part of the Bat-Yam Biennale of Landscape Urbanism. The Bat-Yam Biennale is a unique civic action model that encourages activist action in public space in collaboration with the local authorities.


72 Hour Urban Action is an upcoming voice in the global movement of participatory tactical urbanism, or as we like to call it, Urban Action.

Urban Action is a civic design practice that involves residents, decision makers and professionals. It harnesses creative thinking and existing resources within a community to rapidly make places. Through the power of temporality and experimentation, it encourages participation and a lasting change of perception. Through an extreme deadline, a tight budget and limited space, Urban Action sets the imagination free to allow for new possibilities and players in public space.

The first competition drew participants from 20 nationalities and received major press coverage from the New York Times, Domus Magazine, Metropolis Magazine, Pruned, Abitare, Architizer, Dexinger, Designboom, ArchDaily, Worldchanging and many more.

To realize projects 72 Hour Urban Action international works with local partner organizations. These collaborations contribute to the detailed local knowledge required and to the ability to work with the local community over the months leading up to the event.

72 HUA seeks ways to provide space for experimentation in public space, to involve alternative players in the creative process of urban design and to bridge the gap between planning and construction. These quests, at the periphery of the architecture and planning professions are examined in cities the world over.



Kerem Halbrecht Founder and Co-Director

Kerem is an architect and social developer. Designed projects in Israel and abroad. Served as strategic architectural consultant and curated architectural exhibitions. The editor of Pigumim, a monthly lecture on Architecture and People. He is a co-founder at The Spaceship, an independent collaborative group aiming to create and promote new, unorthodox and open platforms for cultural activities. It seeks to explore the viability and changing nature of public space within the constraints of an increasingly privatized world.

Gilly Karjevsky Co-Director

Gilly is a cultural planner and curator working on projects in the public realm. She lives and works in Tel Aviv-Jaffa. She Holds MA in Narrative Environments from Central Saint Martins. Since working as cultural planner Gilly has led projects, workshops, panels and research papers all looking at different strategies and tactics for urban renewal through arts and culture. Recently Gilly has been working on policy papers for municipalities, municipal artist-residency projects and as advisor to various independent art groups.

Zahi Asa Social Media

Zahi is a student of architecture at the ASOA in the Tel Aviv University. Works as a high-school teacher at Yehud. Participated in the first 72 Hour Urban Action Competition in 2010, as part of the DZO Project team. Future space cadet.



Zachi Raz-El Intern

Zachi is a student of architecture at the ASOA in the Tel Aviv University. Produces party and musical events and amateur DJ. A nomad at heart. Participated in 72HUA in 2013 as part of the Trans4more team.


In Stuttgart, our academic partner is the MSC program for Intergrated Urbanism and Sustainable Design. Students will help us map and identify users, needs, sites and missions, as well as create orientation packs and for visiting international participants of the competition. View the Wagenhallen Atlas they created here.

In future 72 Hour Urban Action events, we aim to collaborate with local academia in the same manner. To find out more or to suggest other academic programs, contact us here.