I'm a fan of Pere Lachaise, Montparnasse, and Montmartre as well. And Claudia mentioned San Miniato Al Monte in Florence? The view of Florence from up there is even a bit better than from Piazzale Michelangelo! Another are the crumbled remains of once-grand tombs along Via Appia Antica in Rome.
I have to chuckle a bit over Mr. Morrison's resting place. It reminded me very much of the riot of bright plastic flowers, toys, coins, liquor bottles, pictures, packs of cigarettes, figurines and who-knows-what-all you often see in cemeteries in the American Southwest. They're positively festive, and especially so when decked out for Día de Muertos.
Back in the 1800's, large public cemeteries in the U.S. doubled as cool, shady parks, and people frequented them for leisure activities. Family picnics, painting, fishing or boating in the ponds, a romp with the little ones or the dog, etc. were common activities, and somberness wasn't required nor expected. I'm reading that many communities are trying to make a return to use of these lovely green spaces by the living, and encouraging these sorts of activities again!