This is the 6039th most frequent Korean word.
서울시에
"In Seoul" or "To Seoul" (depending on context).
The word '서울시에' indicates the location where the action of living is occurring, marked with the location particle '에'.
저는 서울시에 살고 있습니다.
I live in Seoul city.
Here, '서울시에' provides information about where the museum is located, using '에' to signify the location.
서울시에 있는 박물관은 유명합니다.
The museum located in Seoul city is famous.
In this sentence, '서울시에' describes the destination of the action 'to have been,' accompanied by the particle '에' which indicates direction or arrival to the location.