| 100% | OAHU | 4 | Site of the only royal palace in the US |
| 73% | IOLANI | 6 | The only royal palace in the U.S. |
| 72% | OAHU | 4 | Site of the U.S.'s only royal palace |
| 70% | OAHU | 4 | Island home to the only royal palace in the U.S. |
| 69% | OAHU | 4 | Hawaiian island that's home to the only royal palace in the US |
| 58% | HAWAII | 6 | Home of the only royal residence in the United States |
| 58% | GREENWICH | 9 | Site of the original Royal Observatory in London |
| 54% | ATTU | 4 | Site of the only WWII battle on U.S. soil |
| 54% | CHURCHROCK | 10 | Site of the largest radioactive spill in U.S. history |
| 53% | ATTU | 4 | Alaskan site of the only WWII battle on U.S. soil |
| 53% | IRVINE | 6 | Site of a U.C. in the O.C. |
| 52% | HANSEN | 6 | ___ Dam Recreation Area, site in California with one of the largest swimming pools in the U.S. |
| 51% | FORTKNOX | 8 | Army post in Kentucky; site of the US Bullion Depository |
| 50% | ARKANSAS | 8 | Home of the only active diamond mine in the U.S. |
| 50% | OAHU | 4 | Where the US' only royal palace is |
| 49% | TEACHERS | 8 | Makeup of the largest labor union in the US |
| 49% | WOUNDEDKNEE | 11 | Site in South Dakota, US, of the last major battle of the Indian Wars in 1890 |
| 49% | HOUSTON | 7 | Inland port in SE Texas, US; site of the Lyndon B Johnson Space Center |
| 48% | EAR | 3 | Site of the three smallest bones in the body |
| 48% | THERESAMAY | 10 | Head of the only government in U.K. history to be found in contempt of Parliament |
| 47% | EAST | 4 | Only cardinal direction that’s not in the name of a U.S. state |
| 47% | STKITTS | 7 | Site of the first British colony in the Caribbean, 1624 |
| 47% | AGRA | 4 | Site of the "crown of palaces" |
| 47% | MANILA | 6 | Site of the presidential Malacanang Palace |
| 47% | EAST | 4 | Only cardinal direction that does not appear in the name of a U.S. state |
| 47% | HERSTMONCEUX | 12 | — Castle, site in East Sussex of The Royal Greenwich Observatory from 1948-90 |
| 46% | BARRYMORE | 9 | Surname of a famous acting family in the US |
| 46% | EGYPT | 5 | Site of the only remaining ancient Wonder |
| 46% | OPOSSUM | 7 | Only marsupial found in the U.S. |
| 46% | OAHU | 4 | Locale of the lone royal residence in the United States |