NORTH DOWNTOWN. If you want to learn more about the history of the Military College of South Carolina and Corps of Cadets, this is the place to start. Exhibits range from 1842 to present.

SULLIVAN'S ISLAND. Although it fell into disuse more than once, Fort Moultrie has a lengthy history of coastal defense. The original structure was built in the 1770s, but it was abandoned by the British when they captured Charleston in 1780. The second structure at the site was destroyed by a hurricane in 1804. The current fort was built in 1809, with a few modernizations along the way. Part of a chain of forts designed to protect the South Carolina shore from various invaders, Moultrie eventually grew to encompass most of Sullivan's Island, and is today part of the Fort Sumter National Monument. The Visitor Education Center, at Liberty Square, has detailed historical information about both forts.

SULLIVAN'S ISLAND. Despite the fact that construction on Fort Sumter was incomplete, Major Robert Anderson moved his troops here from Fort Moultrie, prepared to defend the site from the Confederate army. Sumter was eventually taken by the Confederates anyway and became a Southern stronghold for most of the Civil War, even in the wake of Union Volleys. The fort is accessible only by water ­ Spirit Line Cruises runs informative trips back and forth, year round. Nearby Fort Moultrie is also worth a visit. The Visitor Education Center, at Liberty Square, has extensive historical information on both forts.

NORTH CHARLESTON. In February 1864 this Confederate submarine, manually powered by nine men, approached the Union ship Housatonic and set off an explosive charge. As the submarine backed away, the ship sank within a matter of minutes. Unfortunately (and for unknown reasons), the submarine also failed, coming to rest on the floor of Charleston Harbor, where it remained until recovery in August, 2000. Now, the Hunley is undergoing conservation at the former Charleston Navy Yard, where visitors can see her from the deck above her holding tank. There are also plenty of other interesting exhibits, including the mock-up of the Hunley that was used in the television movie. Great gift shop, too.

MOUNT PLEASANT. WWII aircraft carrier Yorktown, submarine Clamagore, destroyer Laffey, and Coast Guard cutter Ingham reside here. Also, the Congressional Medal of Honor Museum is here. There is a great gift shop so that you can pick up a remembrance of your visit. Open 7 days a week.