Congaree is one of my favorite parks to visit. I love walking around the boardwalk doing the self guided nature tour. Every time you go the landscape is a little different because of the flood plains. You can see the effects of hurricanes and fires from the past. Great place for kayaking or canoeing. For two weeks in may, it is one of the best places in the United States to see the fireflies migration. There are lots of great hiking trails for all skill levels.