Sant Martí · 69
Diagonal Mar i el Front Marítim del Poblenou
Diagonal Mar is where Avinguda Diagonal reaches the sea through a landscape remade with towers, a shopping centre, park, housing and beach. It looks finished, yet reveals an unfinished negotiation among industrial land, private development, public space, coastal ecology and residential life.
Enter the park and follow one of the large metal structures carrying water. This is not simulated wilderness but a designed, technical landscape requiring costly care, surrounded by towers and streets that show how green space belongs to a larger property operation.
The present neighbourhood was built mainly from the late 1990s and early 2000s on industrial land and fragmented spaces at Poblenou’s eastern end. Extending Diagonal, creating the park, mall, towers and waterfront produced a new metropolitan gateway to the sea.
Its large plots and internal gardens differ from older Poblenou, but it is not context-free. Previous industrial labour, neighbouring Besòs i el Maresme, the Fòrum and the coast determine how it works.
Diagonal Mar i el Front Marítim del Poblenou (neighbourhood 69) highlighted. Other neighbourhoods in Sant Martí: el Camp de l'Arpa del Clot, el Clot, el Parc i la Llacuna del Poblenou, la Vila Olímpica del Poblenou, el Poblenou, el Besòs i el Maresme.
Diagonal Mar i el Front Marítim del Poblenou (neighbourhood 69) highlighted. Other neighbourhoods in Sant Martí: el Camp de l'Arpa del Clot, el Clot, el Parc i la Llacuna del Poblenou, la Vila Olímpica del Poblenou, el Poblenou, el Besòs i el Maresme.
Where the name comes from
Diagonal Mar names Diagonal’s encounter with the coast and the major development itself. Front Marítim del Poblenou identifies the redeveloped waterfront sector.
Geometry and sea displace previous factories from the name. Earlier companies and uses remain part of the area's history before redevelopment.
Between Poblenou, Besòs i Maresme, beach and Forum area.
Before the neighbourhood
Heavy industry, warehouses, infrastructure, vacant plots, channels and coastal uses occupied the sector. Much of the park stands on a dismantled factory site; document the exact relationship with MACOSA and other firms plot by plot.
The eastern coast also connects to shantytowns, military installations and Camp de la Bota, mainly beyond the boundary. Explain continuity without absorbing adjacent territory.
How the streets were made
The current form combines private development with infrastructure and public space. Towers create density while separating street, communal garden and residential access. The mall moves activity indoors that elsewhere occurs on streets.
Enric Miralles and Benedetta Tagliabue designed the park through lakes, planting, large structures and water devices. Opened in 2002, it covers about fourteen hectares. Explain both ambition and irrigation, repair, security and maintenance.
Dates that changed it
- Nineteenth–twentieth centuries: industrialisation of the eastern coast.
- 1960s–1980s: crisis and dismantling of major industry.
- Late 1990s: major residential-commercial development begins.
- 2001: The shopping centre opens through successive development phases.
- 2002: Parc de Diagonal Mar opens.
- 2004: Fòrum and surrounding waterfront redevelopment.
- 2006: current administrative neighbourhood defined.
- 2020s: adaptations to park, coast and mobility.
People and collective life
Industrial workers, Poblenou and Besòs families, construction labour and new residents belong to different chronologies. Today shop workers, cleaners, gardeners, security staff, concierges, couriers, technicians and hotel staff sustain the area, often commuting from elsewhere.
Collective life occurs across parks, schools, beach, residential communities and Maresme connections. Towers distribute sociability among public space, controlled grounds and resident-management systems.
Previous industrial users
Erased layer
People behind the buildings
Miralles and Tagliabue are central to the park. The wider operation involved international developers, planners, landscape architects, engineers and public authorities; identify responsibility by phase and plot.
Include those who maintain lakes, pumps, planting, lifts, garages and façades. Vertical architecture transfers much everyday city-making into contracts and common charges.
Institutions
The park, mall, schools, healthcare, beaches, sports facilities, libraries, metro and tram form the infrastructure. The neighbourhood also depends on Besòs and Fòrum services.
Distinguish municipal public space, publicly accessible privately managed space and residential communal space. Rights, hours, surveillance and protest differ.
Beach
Leisure
Struggles that left a mark
Demand: Key questions concern private development and public benefit, affordable housing, coastal continuity, industrial memory, commerce and park quality. Green space does not automatically settle inequality.
Outcome: Historical controversy
Demand: Heat, shade, noise, beach use, tourism, events and residential costs remain contested. Compare capital investment with long-term maintenance.
Outcome: Management
What can still be seen
The park reveals water systems, structures, levels and planting; towers reveal verticalisation; the mall, internalised consumption; the beach, a manufactured recreational coast.
Look at edges—walls, fences, garage entrances, paving changes and interrupted desire lines. Actual permeability matters more than aerial imagery.
What disappeared
Factories, infrastructure, productive plots and earlier coastal landscapes disappeared. Some industrial processes were lost before documentation.
Inventory firms, workers, materials, contamination and displacement. “Disused factory site” must name the factory and its work.
The neighbourhood today
In 2026 it had 13,771 residents, 112.2 residents per hectare, a mean census-section income of €28,985 in 2023, 122.7 hectares, and 26.3% of residents held non-Spanish nationality.
Dense towers coexist with beaches, park, roads and commerce, lowering the average. Disaggregate tenure, second homes, vacancy, age, income and daytime use.
Non-Spanish nationality (2026): 26.3%
What is changing
The coast, Fòrum connections, retail uses, shade and park water systems are changing. Heat and drought require questions about which planting and lakes can be sustained.
Delivered affordable housing, tower occupancy, service charges, park repairs, water quality and climate adaptation each change on their own schedules.
What the guides leave out
They present a park, towers and beach as a finished city. They omit industrial land, private financing, maintenance and social borders.
A park can be a landscape work, compensation, ecology and real estate asset at the same time.
Read it on foot
Start: El Maresme | Fòrum (L4) · End: Park and beach
Walking (excluding stop time): 22 min · 1790 m · Estimated visit (with stops): 52 min
The geometry follows the pedestrian network between the three marked points, but it has not been verified as step-free. Check access conditions, works and opening hours before setting out. The approach from public transport is not included in the stated distance.
Diagonal Mar i el Front Marítim del Poblenou (neighbourhood 69) highlighted. Other neighbourhoods in Sant Martí: el Camp de l'Arpa del Clot, el Clot, el Parc i la Llacuna del Poblenou, la Vila Olímpica del Poblenou, el Poblenou, el Besòs i el Maresme.
Diagonal Mar i el Front Marítim del Poblenou (neighbourhood 69) highlighted. Other neighbourhoods in Sant Martí: el Camp de l'Arpa del Clot, el Clot, el Parc i la Llacuna del Poblenou, la Vila Olímpica del Poblenou, el Poblenou, el Besòs i el Maresme.
Sources for this page
Dates, figures and historical claims are linked to the records used for this page.
- [1] Ajuntament de Barcelona — Open Data BCN (2026-01-01). Padró municipal d'habitants (pad_mdbas) — població per barri. Type: statistical_dataset. Locator: pad-sexe-2026. Accessed: 2026-07-17.
- [2] Ajuntament de Barcelona — Open Data BCN (2021). Densitat de població per barri. Type: statistical_dataset. Locator: densitat-2021. Accessed: 2026-07-17.
- [3] Ajuntament de Barcelona — Open Data BCN (2023). Renda disponible de les llars per persona. Seccions censals. Type: statistical_dataset. Locator: renda-2023. Accessed: 2026-07-17.
- [4] Ajuntament de Barcelona — Open Data BCN (2026-01-01). Població per nacionalitat i sexe. Barris. Type: statistical_dataset. Locator: pad-nac-2026. Accessed: 2026-07-17.
- [5] Joan Busquets (2005). Barcelona: the urban evolution of a compact city. Type: book. Locator: busquets-barcelona. Accessed: 2026-07-17.
- [6] Ajuntament de Barcelona / Fabra i Coats Fàbrica de Creació (n.d.). Fabra i Coats — fàbrica i reutilització cultural. Type: industrial_heritage. Locator: fabra-coats. Accessed: 2026-07-17.
- [7] MUHBA / Ajuntament de Barcelona (n.d.). MUHBA — Museu d'Història de Barcelona (publicacions i jaciments). Type: museum. Locator: muhba. Accessed: 2026-07-17.
- [8] AHCB / Ajuntament de Barcelona (n.d.). Arxiu Històric de la Ciutat de Barcelona — fons i cartografia. Type: archive. Locator: ahcb. Accessed: 2026-07-17.
- [9] Ajuntament de Barcelona (n.d.). Catàleg de patrimoni arquitectònic de Barcelona. Type: heritage_catalogue. Locator: heritage-catalog. Accessed: 2026-07-17.
- [10] FAVB (n.d.). Federació d'Associacions de Veïns i Veïnes de Barcelona. Type: civil_society. Locator: favb. Accessed: 2026-07-17.
- [11] AMCB / Ajuntament de Barcelona (n.d.). Arxiu Municipal Contemporani de Barcelona. Type: archive. Locator: amcb. Accessed: 2026-07-17.
- [12] Ajuntament de Barcelona (n.d.). Nomenclàtor dels carrers de Barcelona. Type: gazetteer. Locator: nomenclator-bcn. Accessed: 2026-07-17.
- [13] TMB (n.d.). Transports Metropolitans de Barcelona — xarxa de metro. Type: transport. Locator: tmb. Accessed: 2026-07-17.
Last reviewed: 17 July 2026 · 13 sources consulted