if you'll visit Paris, you need to visit the "Pere Lachaise" (Father Lachaise).
Father Lachaise is a cemetary but not a sad and squalid place.
Father Lachaise is a "must see" in Paris and, above all, a beautiful undulating and green park with an extraordinary sculpture collection.
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Comment On A Paris "must see" : the "Pere Lachaise "
France.com
A cemetary is not exactly a place one thinks to visit when going to a foreign land, but you are right in pointing out that it is really a must see place. Talk about a place charged with history!