The tallest brick building ever built was the sixteen-story Monadnock Building, a general-purpose office building erected in Chicago in 1893 and designed shortly before his death by the architect John Root of the famous firm of Burnham and Root. The Monadnock Building still stands, and is an extraordinary edifice. Such is its weight that the walls at street level are six feet thick, making the ground floor—normally the most welcoming part of a building—into a dark and forbidding vault.
