Navy Yard Railroad Gun

Welcome to the Atlas Obscura Community discussion of Navy Yard Railroad Gun in Washington, D.C… Ask questions or share travel tips, experiences, pictures, or general comments with the community. For the story behind this place, check out the Atlas Obscura entry:
https://www.atlasobscura.com/places/navy-yard-railroad-gun?utm_source=atlas-forum&utm_medium=referral