The Louisiana Purchase State Park can be found on Arkansas Highway 362 near Brinkley, Arkansas. I say near, because its actually way in the country, but its a nice trip through the Delta.
An elevated boardwalk carries you deep into the woods and a swampy area. It is a little dark and you hear the sounds of all types of birds, frogs, and other animals. I strongly suggest you carry mosquito repellant because they are definitely out in the summer.
As you walk along the boardwalk, there are exhibits discussing the lowlands, native plants, and animals.
The park preserves the initial point from which all surveys acquired through the Louisiana Purchase of 1803 originated. Signs along the walkway discuss the Purchase and a granite monument stands at the survey’s starting point. It was actually placed here in the 1920s.
If you go in the summer, take water because it does get hot. Again, don’t forget the insect repellant as well.