▁Japan . ▁It ▁is ▁operated ▁by ▁the ▁N awa ▁In sect ▁Research ▁Center . ▁ ▁History ▁Y as ush i ▁N awa , ▁the ▁man ▁who ▁discovered ▁the ▁G if u ▁But ter fly ▁and ▁is ▁known ▁as ▁" The ▁In sect ▁Man ," ▁opened ▁the ▁N awa ▁In sect ▁Research ▁Center ▁in ▁April ▁ 1 8 9 6 . ▁The ▁center ▁was ▁moved ▁to ▁its ▁present ▁location ▁in ▁G if u ▁Park ▁in ▁ 1 9 0 4 , ▁and ▁became ▁the ▁N awa ▁In sect ▁Museum ▁in ▁ 1 9 1 9 , ▁the ▁first ▁insect ▁museum ▁in ▁Japan . ▁It ▁currently ▁houses ▁over ▁ 3 0 0 , 0 0 0 ▁spec im ens ▁of ▁ 1 8 , 0 0 0 ▁different ▁insect ▁species . ▁ ▁The ▁building ▁that ▁houses ▁the ▁museum ▁was ▁designed ▁by ▁Go ichi ▁Tak eda ▁in ▁a ▁modern ▁western ▁style ▁that ▁was ▁quite ▁rare ▁at ▁the ▁time . ▁The ▁building ▁is ▁now ▁a ▁Tang ible ▁Cultural ▁Property ▁of ▁the ▁pre fect ure . ▁ ▁Fac ilities ▁Information ▁H ours ▁of ▁Operation : ▁ 1 0 : 0 0 am ▁to ▁ 5 : 0 0 pm ▁( 9 : 0 0 am ▁to ▁ 6 : 0 0 pm ▁during ▁summer ▁months ) ▁Hol id ays : ▁Dec . ▁ 2 7 ▁to ▁Jan . ▁ 3 ▁En tr ance ▁F ee : ▁Ad ult s : ▁ 5 0 0 ▁y en ▁Children : ▁ 4 0 0 ▁y en ▁Other ▁fe es ▁may