| Name | Knife Edge |
| Address | 150 4th Street NW, Washington, District of Columbia, United States |
| Date | 0000-00-00 |
| Time | 00:00:00 |
| Category | unknown |
| Description | Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.... |
| Coordinates | 38.89090, -77.01720 |
| Web address | /places/knife-edge |