I take my walking tours down to scenic White Point Garden, where we get to see the Keokuk gun on display – a cannon that fought for both sides during the Civil War. The gun was aboard the US warship Keokuk firing at Charleston’s defenders in Fort Sumter when it was sunk by cannon fire and sank in shallow water with its gun turrets exposed. Charleston engineers pried open the turrets and retrieved the gun, mounting it to fire back on the fleet it with which it came.