I agree on the overuse of the word ‘iconic’.
As for similar designs look at the link provided by another poster above to Scorer’s 1950’s roof for a petrol station off the A1 at Markham Moor, Nottinghamshire. English Heritage’s listed this structure (List entry Number: 1402678) in 2012 due to the fact that this design used this hyperbolic paraboloid structure and was deemed worthy of listed building status due to architectural interest and its technical innovation.
Another design is The Parabola (previously known as the Commonwealth Institute) (built 1962), High Street Kensington, London which is Grade II listed following threat of demolition in 2009 Click here