Out of curiosity did a google search to see where was France's greatest king and emperor was buried. Interestingly, it is not the most popular tourist site thanks to British version of history where one of Europe's greatest generals, military minds and a good king has been portrayed as a commoner who lost to the British eventually.
History aside, Napoleon's monument is really a beautiful building, architecturally majestic and artistically very grand inside. It is similar to the St. Paul's Cathedral in London but about half size but definitely a worthy monument to the great king and worth a visit.