The Place de Trocadéro owes its name to the fortified position in Puerto Real, on the Bay of Cadiz in the south of Spain, which was captured in the Battle of Trocadero by French troops led by Louis-Antoine, Duke of Angoulême, Charles X's son in 1823. This name was also given to the "Moorish" palace built for the World Fair of 1878. The palace was demolished in 1937 and was replaced by the current "Palace of Chaillot".