国民こくみんてき
kokuminteki

na-Adjective

1. national (e.g. hero, pastime, consensus); relevant to all citizens; popular on a national level

この建物たてもの国民こくみんてき遺産いさんとして保存ほぞんすべきだ。
kono tatemonowa kokuminteki isanto shite hozon subekida.
This building should be kept as a national heritage.