One of Asif Khan's Expo Entry Portals at Expo City Dubai, a 21-metre-high gateway woven from an ultra-fine carbon-fibre lattice resembling a giant mashrabiya screen, with two vast doors

Dubai · Dubai Marina & JLT

Expo City Entry Portals

Asif Khan's 21-metre carbon-fibre gateways — a mashrabiya 'drawn in the sky', with vast doors thin and light enough to be opened by one person.

The Expo Entry Portals are a trio of monumental gateways designed by the British architect Asif Khan for Expo 2020 Dubai, now part of Expo City Dubai. Conceived as the first and last thing visitors encounter, one portal serves each of the site's three thematic districts — Opportunity, Mobility and Sustainability — each leading into a tree-filled arrival courtyard also designed by Khan, as part of the more than six kilometres of public realm his studio created for the site.

Each portal stands about 21 metres high — taller than a six-storey building — and 30 metres long, yet is woven entirely from strands of ultra-lightweight carbon-fibre composite, with no additional structural support. Khan set out to create 'a mashrabiya like no other… impossibly thin and impossibly light, like a drawing in the sky', at a scale where the lattice becomes architecture in itself. To achieve it, his studio developed a new carbon-fibre technique with an aircraft engineer and a specialist manufacturer: carbon-fibre ribbon, made of thousands of ultra-fine fibres, was wrapped around a rotating mandrel in a 3D-weaving process, then craned into place. From a distance the portals read as translucent planes; up close they resolve into hundreds of fine woven lines, and from the correct angle the geometry echoes the Expo 2020 logo.

Each portal carries two vast doors, 21 metres high and 10.5 metres wide, yet so finely engineered that a single person can open them. During the Expo they were opened every morning across the 173-day run in a symbolic act of welcoming the world; they can be held anywhere from slightly ajar to flung fully open for major events. Drawing on the traditional mashrabiya's control of light and airflow, the portals also provide shade and let air move freely — a piece of shared Islamic design language recast in the material of Formula One and aircraft.

Exhibo editorial

Asif Khan wanted a mashrabiya 'like a drawing in the sky', and the maddening thing is that he got it. Each portal is 21 metres tall, the height of a six-storey building, and appears to be made of almost nothing — a haze of fine lines that only resolves into a solid lattice as you get close. It's carbon fibre, the stuff of race cars and aircraft, woven into something that looks like it might blow away.

The proof of the engineering is the doors: 21 metres high, and light enough for one person to swing open. During the Expo that's exactly what happened every morning — the world's biggest doors, opened by hand, as a daily act of welcome. Approach one straight on and it's a wall of shifting lines; step to the correct angle and the Expo logo appears in the geometry. Walk through slowly, and notice how the light falls.

How to find it

The three Entry Portals mark the gateways into Expo City Dubai in Dubai South, one for each of the Opportunity, Mobility and Sustainability districts, each opening onto a tree-filled courtyard. They sit at the thresholds of the site, so you pass through one as you enter — approach head-on to see the lattice resolve from translucent planes into fine carbon-fibre lines, and look for the angle where the geometry forms the Expo logo. Best appreciated on foot, walking through the doorway.

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