However, only five of them except Shimabara currently function as a geisha district, and accordingly, they are collectively referred to as "Go-kagai" (five hanamachi, or kagai).
しかし、花街としての機能を果たしているのは嶋原を除く5ヶ所でそれらをまとめて『五花街』（ごかがい）と呼ばれている。