What would you do if you had 500 billion won?

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BNF, who is called a legend of the Japanese stock market, has a fortune of about 500 billion won.
I heard that lately he isn't trading stocks but is instead purchasing buildings.
If you have 500 billion won, it feels like you wouldn't be able to spend it all even if you spent your entire life doing nothing but spending money.
Even someone with 500 billion won lives so diligently.
If it were me, I think I would travel the whole world and spend money to my heart's content until I die.
Buying buildings seems like a foolish move; you could just live off the bank interest alone.