David Marks of Marks Barfield Architects and John Roberts of Jacobs Engineering inspect the 17 tubular steel “cans” that will make up the 180m-high, i360 observation mast in Brighton

The cans, which are up to 57 tonnes in weight, are being made in the Netherlands. Marks Barfield is developing the £30m project itself, with an as-yet unnamed private equity partner. The project uses the same team as Marks Barfield’s London Eye: structural engineer Jacobs, steel contractor Hollandia and observation pod manufacturer Poma.