no-go area

noun

1. a district in a town that is barricaded off, usually by a paramilitary organization, within which the police, army, etc, can only enter by force
2. an area that is barred to certain individuals, groups, etc

Example Sentences

At the time, one of the families told BBC News NI: “Even when we were looking for accommodation, no-one told us that this was a no-go area.”

From BBC

Prof Andrews says seeing the flag can indicate a "no-go area" for minorities.

From BBC

Following the exodus of businesses, the CBD became a no-go area with a reputation for crime and violence, and some buildings were reportedly abandoned by owners as rates owed to the council exceeded their value.

From BBC

And in 2017 she was accused of staging a visit to a so-called "no-go area for women" in Paris.

From BBC

Community leader Oriyomi Akeem said Slum Party has helped bring peace to a neighbourhood once known as a no-go area overrun by gangs.

From Reuters