Grätzloase — Vienna's Resident-Built Parklets in Parking Spaces

Grätzloase ('neighbourhood oasis') lets any Vienna resident or group turn street parking spaces or other public space into a temporary parklet or meeting place. The scheme has run since 2015, coordinated by Local Agenda 21, a city-funded organisation that gives grants of up to €5,000 towards construction costs and helps with permits and administration.
More than 100 projects have been realised across the city, typically as quick, cheap and reversible interventions with seating, tables and greenery, sometimes hosting workshops, communal dining and events. Participants report initial neighbour pushback turning into appreciation for the social space created; organisers describe it as 'tactical urbanism' in which people, once they see improvements, develop a bigger vision for their street.
Evidence caveat: published material consists of programme descriptions, case-study write-ups and resident testimonies. Project counts differ between sources and no independent quantitative evaluation of social, air-quality or traffic effects was found. Interventions are temporary, so lasting change to street space depends on separate city decisions.

Read the full analysis: https://www.masteringpublicspace.org/the-city-where-anyone-can-build-an-urban-oasis/