Lawmakers propose back-up capital in Osaka in case of quake

TOKYO – Japan’s government should turn Osaka’s old airport into a site to handle administrative functions and economic activities in the event an earthquake, or other disaster, knocks out Tokyo, according to a group of lawmakers.

I would have thought Kyoto would be a more fitting locale given it's the historical centre of Japan, but I suppose refurbishing an existing site makes sense.

In any case, having a backup is a great idea. The USS Enterprise D had an auxiliary "battle" bridge, and Australia has Canberra.