| Name | Ruins of the Columbian Cannon Foundry |
| Address | Capital Crescent Trail, Washington, District of Columbia, United States |
| Date | 0000-00-00 |
| Time | 00:00:00 |
| Category | unknown |
| Description | These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.... |
| Coordinates | 38.90540, -77.07900 |
| Web address | /places/ruins-of-the-columbian-cannon-foundry |