The centre of Paris contains the most visited monuments in the city, including the Notre Dame Cathedral (now closed for restoration) and the Louvre as well as the Sainte-Chapelle; Les Invalides, where the tomb of Napoleon is located, and the Eiffel Tower are located on the Left Bank south-west of the centre. The Panthéon and the Catacombs of Paris are also located on the Left Bank of the Seine. The banks of the Seine from the Pont de Sully to the Pont d'Iéna have been listed as a UNESCO World Heritage Site since 1991.