If it's weird you've got lots of company. Loads of old cemetaries around here; most do at least some type of tours. Close to where I live is a particularly large, historic and famous one, Woodlawn. They have all kinds of tours and even concerts and such. Anyone interested should be able to check it out by Googling Woodlawn Cemetary and NYC. Non mortuary trivia about it includes one gate being where the ransom for the Lindburgh baby was left.
Jeannie