We visited Fort Moultrie National Historical Park in Charleston, South Carolina.

Visitor center:

The fort:

Underground command post:

View of the fort from a deck on top of the visitor center:

Nearby, a funky-looking lighthouse:

We visited Fort Sumter National Historical Park in Charleston, South Carolina.

The fort is on an island, so the only way to visit it is via a ferry operated by Fort Sumter Tours; best to book a few days ahead:

Aircraft carrier across the harbor, part of a museum:

Approaching Fort Sumter:

Entering the fort:

The first submarine in history to sink an enemy ship, in 1864:

Model of the fort:

Back to the ferry:

Fascinating.

We visited Fort Frederica National Monument in Georgia. It was established in 1736 to help protect the British colonies from the Spanish in Florida.

An interactive map:

Visitor center:

Model of the fort and town:

Building foundations:

Ancient live oak tree:

Archaeology dig site:

Foundations of the fanciest house in town:

Remains of the fort:

The fort info sign:

Cannons:

Fort selfie:

What happened?

The barracks:

Reenactors:

He and Jenn chatted for a while, explaining about the hut, his uniform, his gun, and more:

A fascinating visit.