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.


