In a similar vein I'm working on an idea to monetize cemetery plots and crypts in and around San Francisco. They're quiet workplaces with scenic views (lots of flowers and greenery), often centrally located and many are close to coffee shops. With a little cabling/wiring and some temporary structures they would make ideal workplaces.
Turning a place of honor into an office space kinda defeats the whole point and is super disrespectful.