The invention of reinforced concrete appeared in modern times. It is generally believed that the French gardener en:Joseph Monier invented reinforced concrete in 1849, and obtained the patent of reinforced concrete flowerpot and reinforced concrete beam and column applied to highway guardrail in 1867. 1872, the world's first reinforced concrete building was completed in new york, USA.
Chicago insurance building
Chicago Insurance Building (1884-1885 completed) is the first building supported by reinforced concrete structure in the world.