Bangalore: When you have billions piled up, you would want to spend it to the heart’s content. You may want to buy an exotic mansion worth million, or have a private island to spend your weekends. But few super rich people around the world don’t just stop here. They do the craziest stuff with their money like buying luxurious doomsday safe condos or flying paper planes with money. Here is a round-up of some of these insane things super rich people spend their money on.

1. Get Doomsday-Safe Underground Luxury Condo

Rich people, who have too much on their plates to worry about what will happen when the doomsday comes and the world ends buy doomsday-safe underground luxury condo. As per AFP report, four buyers have already spent about $7 million on these condos.

This has a cylindrical underground building which includes condo space, indoor farm, pool, movie theatre, a stockpile of five years worth of dry food and space for a medical center and school, states the report.