Il 30 St Mary Axe è un edificio di Londra, situato nella City. Informalmente è conosciuto come "The Gherkin" ("il cetriolo") oppure, facendo riferimento al proprietario (il gruppo assicurativo Swiss Re) come The Swiss Re Tower, Swiss Re Building o Swiss Re Centre. Alto 180 m, è famoso per la sua audace architettura, opera di Norman Foster e del suo ex socio, Ken Shuttleworth.
30 St Mary Axe, also known as the Gherkin and the Swiss Re Building,
is a skyscraper in London's main financial district, the City of
London, completed in December 2003 and opened on 28 April 2004. It is
180 metres (591 ft) tall, with 40 floors. Its erection symbolised the
start of a new high-rise construction boom in London.
The building was designed by Lord Foster, his then business partner Ken Shuttleworth and Arup engineers, and was erected by Skanska in 2001–2004.