The book explores the concept of urban fragility during the COVID-19 pandemic in Barcelona, associating the spatial dimension of the city with the impact of social, cultural and environmental realities that are less visible but that can be decisive for the city of the future. Barcelona Fragile City presents an alternative image of the impact of the pandemic on the city of Barcelona that can be superimposed upon the images of the conventional city, allowing both to be compared. Through theoretical approaches, site-specific research and community involvement, the book seeks to discover and make visible the hidden spatiality of the city during the first state of alarm. It presents everyday-life practices associated with space that have not been transmitted by statistics nor media, representing vulnerable spaces and also associated to consciousness and memory of space of the private and shared imaginary.  Bilingual in English & Spanish