| Clue | Source | Date |
|---|---|---|
| Closed-off districts | LA Times Daily | 29 Mar 2023 |
| Enclosed territories | ||
| Enclosed territories | ||
| Territories within territories | Universal | 28 Feb 2020 |
| Enclosed and distinct territories | ||
| Isolated communities | LA Times Daily | 17 Nov 2016 |
| Isolated regions | Newsday | 28 Feb 2016 |
| Lands within lands | USA Today | 12 Oct 2015 |
| Lands within lands | ||
| Isolated districts | ||
| Diplomatic compounds | ||
| Lands within lands | ||
| Vatican City and Chinatown | ||
| Phenomena of the empire era | ||
| Territories surrounded by other countries. | ||
| Territorial units. | ||
| Surrounded lands. |