The Trocadéro is an area of Paris, in the 16th arrondissement, across the Seine from the Eiffel Tower.
The place was named in honour of the Battle of Trocadero, the fortified position of Trocadero, an island in the South of Spain, was captured by French forces led by the Duc d'Angoulême, son of the future king, Charles X, on August 31, 1823. France had intervened on behalf of King Ferdinand VII of Spain, whose rule was contested by a liberal rebellion. Trocadero restored the autocratic Spanish Bourbon Ferdinand VII to the throne of Spain, in an action that defined the Restoration.
Chateaubriand said "To stride across the lands of Spain at one go, to succeed there, where Bonaparte had failed, to triumph on that same soil where the arms of the fantastic man suffered reverses, to do in six months what he couldn't do in seven years, that was truly prodigious!
Today the square is officially named Place du Trocadéro et du 11 Novembre, although it is usually simply called the Place du Trocadéro.