The National Maritime Museum has fired the starting gun on its search for an architect to design an overhaul of the Royal Observatory Greenwich.

Practices have until September 2 to submit expressions of interest for the prestigious job to enhance the visitor experience at the 350-year-old observatory, which has played a major global role in the history of astronomy and navigation.

The museum complex is looking to shortlist three heritage architects, with the winning firm to lead a multidisciplinary team drawing up a new vision for the site. The fee for the design contract is £450,000.

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