Got to visit Fort Sumter on my trip to Charleston, SC this week.
Here's a photo of the fort as it stands today;
It's now designated as a National Monument. Inside the museum there is a
very nice model of the fort as it stood in 1861 just before the American Civil War;
Also, a 100 pounder Parrott rifle;
I don't believe these guns were ever mounted at Sumter during any of it's battles. I think one of them was used by Union forces in a counterattack later in the war.
It's quite an incredible sight to walk around such a 'small' fort. It's very different being inside the walls where 85 or so Union soldiers held out while being surrounded by the enemy on 3 sides. 2 days of artillery shelling and not a single casualty is almost hard to believe.
An interesting fact that the tour guides liked to share was that Pvt. Daniel Hough was the first soldier to die during the American Civil War; not from enemy fire, but from an accident caused by a cannon that went off prematurely during a salute to the flag. Sadly ironic.
Here's an actual photo of a Confederate flag flying over Sumter after it was surrendered in 1861;