The 7th arrondissement lies to the southwest of the centre, across the Seine. The Eiffel Tower is the most famous landmark of the 7th arrondissement and of Paris itself. It was a "temporary" construction by Gustave Eiffel for the 1889 Universal Exposition (early "World's Fair"), but was never dismantled and is now an enduring symbol of Paris, instantly recognized throughout the World. The Axe historique (Historical axis) is a line of monuments, buildings, and thoroughfares that run in a roughly straight line from the city centre westwards. Many hotels are located in this district including Hôtel Biron, Hôtel de Castries, Hôtel de Conti, Hôtel de Mademoiselle de Condé, Hôtel du Châtelet, and Hôtel Matignon. The Invalides museum is the burial place for many great French soldiers, including Napoleon Bonaparte, later the Emperor Napoleon I, (1769–1821), and the 18th Century military school, Ecole Militaire, is also located here. Other museums include the Musée Rodin and the Musée de la Légion d'honneur. The Ukrainian Embassy and the World Heritage Centre lie in the 7th arrondissement, and several bridges crossing the Seine include Pont de la Concorde and Pont Royal.