Napoleon Bonaparte died on May 5, 1821 on the island of St. Helena where he had been exiled. He was 51 years old at the time. His autopsy, led by his personal physician, François Carlo Antommarchi, concluded that his cause of death was stomach cancer, though there have been conspiracy theories which question that conclusion. Napoleon was originally buried on the island of St. Helena. In 1840, the French King, Louis-Philippe, after making arrangements with the British, had his remains moved to St Jerome's Chapel in Paris. In 1861 Napoleon’s remains were moved to a place of prominence under the dome in the newly renovated Les Invalides in Paris.
Originally, Napoleon was buried on St. Helena. St. Helena is where Napoleon was exiled and lived out the remainder of his life. Later, his body was transferred to Les Invalides, Paris, France. Les Invalides has a lot of museums and monuments having to do with France and its military past. In 1670, a building, meant to be a hospital, was built and it is under the dome of this building that Napoleon is buried. There are other war hereo's that are buried there as well. Napoleon actually wanted to be cremated but he wishes were not carried out.
Bodily remains of Napoleon Bonaparte are buried at the Eglise du Dome (Church of the Dome), which is part of the Hotel des Invalides (Home for Disabled Soldiers), Located in the city of Paris.
On his death in 1821, Napoleon was originally buried on the island of St. Helena. However, in 1841 his remains were brought to Paris in accordance with his wishes to be buried:
... on the banks of the Seine, among the French people I have loved so much.
The remains were finally brought to its present resting place in 1861, and a fine monument was created over it.