Secret Intelligence Service

"The SIS was created in 1909; the abbreviation MI6 (for “military intelligence, section six”) was adopted at the start of World War II. For decades the agency was a shadowy legend, hinted at but not officially recognized until long after the end of the Cold War. In the mid-1990s it was decided that MI6 should become more open, and the building on Vauxhall’s Albert Embankment was purchased as a public statement of this new attitude. The structure was designed by Farrell as an “urban village” concept, and it was adapted for MI6’s high-security standards after being purchased by the government. It is not one building but a group of three blocks interconnected by courtyards and atria, which are covered in panes of green-colored glass to coordinate with the decorated facade. Its stepped outline stretches up to a height of nine stories and extends downward deep beneath the London pavements to provide extra security. Two moats provide further protection."