This is the 545th most frequent Japanese word.
福島
Fukushima: A prefecture in northeastern Japan or its capital city.
In this sentence, '福島' refers to the name of a location, Fukushima, which is a prefecture in Japan.
福島は美しい自然が広がる町です。
Fukushima is a town with expansive beautiful nature.
Here, '福島' is used to denote the origin of a product, specifically peaches from Fukushima Prefecture.
福島の桃はとても有名です。
Peaches from Fukushima are very famous.
In this usage, '福島' identifies the place where an action or event took place, namely a traditional festival.