伝統 でんとう てき建造 けんぞう ぶつ ぐん保存 ほぞん地区 ちくであれば
dento utekikenzōbutsugun hozonchikudeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 伝統的建造物群保存地区

1. If it is a traditional architectural preservation district; When it is a traditional architectural preservation district

Ba Conditional