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The Fòrum and Diagonal Mar: the 21st-century edge
architecturewaterfront

The Fòrum and Diagonal Mar: the 21st-century edge

A blue cantilevered triangle, a solar canopy over the sea, and Miralles' water park behind it.

Photo: ILESH / Wikimedia Commons, CC BY 2.0

Drafted by Claude — the editor hasn’t walked this one yet. We’ll update this notice once it’s been verified on the ground.

Distance

3.5 km

Time

~ 80 min

Difficulty

Moderate

End

El Maresme-Fòrum (L4)

Best at

afternoon

Right now
27°C· Partly cloudy

Open in Maps for turn-by-turn, or take it offline as GPX.

This is Barcelona's newest edge — the strip of harbour the city reinvented in 2004 for a culture festival nobody quite remembers, leaving behind some of the boldest public architecture in Europe. It's not pretty in the old Catalan way. It's strange, and on a clear afternoon it's thrilling.

Three and a half kilometres. Start under the Edifici Fòrum, Herzog & de Meuron's deep-blue triangle, cantilevered out over the plaza on almost nothing — walk beneath it and look straight up. The Museu Blau, the natural-history museum, shares the same slab if you want shade and a whale skeleton.

Then towards the sea, where the giant photovoltaic canopy tilts at the sun like a landed spacecraft. Stand in its shadow. Below it, the Fòrum bathing zone — a sea pool, not a beach, where the city swims off the concrete in summer.

Turn inland for the soft counterpoint: Enric Miralles' Parc de Diagonal Mar, all looping pergolas and hanging planters and threaded water. Follow the channels back out, then the Rambla de Prim returns you to El Maresme-Fòrum metro — the old harbour, rewritten.

The route

On the map.

Elevation

114 m·108 m·-120 m ASL

Stops along the way

Things to notice.

  1. 01
    1

    Edifici Fòrum

    Start under the great blue triangle — Herzog & de Meuron's convention building, a flat slab cantilevered out over open plaza on impossibly few supports. The deep-blue rough-rendered underside is the show; walk right beneath it and look up.

  2. 02
    2

    Museu Blau

    The natural-history museum shares the slab — fossils, minerals, a whale skeleton, all under one roof. Good on a hot afternoon when you want shade and air-conditioning. The 'Planeta Vida' permanent show is the one to see.

  3. 03
    3

    The photovoltaic canopy

    Walk towards the water and the enormous tilted solar pergola comes into view — a single vast panel on a stalk, angled at the sun, throwing shade on the esplanade below. It looks like it landed here. Stand in its shadow for the scale.

  4. 04
    4

    The bathing zone

    Past the canopy, the Fòrum's swimming area — not a beach but a sheltered concrete-edged sea pool where the city swims off the rocks in summer. You don't have to get in; the steps down to the water are a fine place to sit with the harbour traffic.

  5. 05
    5

    Parc de Diagonal Mar

    Turn inland to Enric Miralles' park — looping white pergolas hung with terracotta planters, ponds and channels threading between them. It's a water park in the literal sense, all curves and reflection. Follow the water; it leads you through.

  6. 06
    6

    Rambla de Prim

    The wide tree-lined avenue back towards the metro, cutting through the newest, most planned stretch of the city. After Miralles' curves it feels almost severe — which is the point of this whole walk, the old harbour edge rewritten in straight lines and engineering.