The SIS Building in London was designed by Terry Farrell and Partners, who won the site competition, for the Secret Intelligence Service. The developer Regalian Properties bought the site in 1983, and the government bought it in 1989 for 130 million pounds. John Laing was the main contractor. It was completed in April 1994 and opened on July 14, 1994.
The infobox lists Postmodern, but the text never uses that term. It describes influences from 1930s industrial modernism, such as Bankside and Battersea power stations, and from Mayan and Aztec temples. It uses about 130,000 square feet (12,000 square meters) of glass and aluminium, with 25 types of glass and triple glazing for security.
Two moats protect it, and large parts lie below street level. A rocket attack in September 2000 caused superficial damage. Trespass is an offence, and it is the headquarters of MI6. The article gives no hours.

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