Grimshaw designs sculptural metal enclosure for HS2 ventilation shaft

A decorative roof and curved weathered-steel wall will enclose the Amersham Vent Shaft that Grimshaw has designed for the High Speed 2 railway.
Built within a road junction in the town of Amersham, England, the cylindrical headhouse will become one of the only visible elements of the rail line's 10-mile-long tunnel through the Chilterns countryside.
Its curvaceous, sculpture-like aesthetic has been developed by British architecture practice Grimshaw to become a "local landmark" and pay homage to