이 마을은

this village is

→ 이
phrase Rare #22,852
this village is 이 마을 means “this village” or “this town,” and 은 marks it as the topic of the sentence. The exact English wording may vary depending on the following predicate.
KO: 이 마을은 겨울에 아주 조용해요.
EN: This village is very quiet in winter.

이 마을은 모두를 위해 공간이 충분해

This town has enough space for everyone.

— 황야의 무법자 (1964)

이 마을은 저녁 먹으면 자요

Everyone in this village goes to bed after dinner.

— 이키루 (1952)