The Lincoln Log Cabin State Historic Site is an 86-acre (0.3 km2) history park located eight miles (13 km) south of Charleston, Illinois, U.S., near the town of Lerna.

[1] After a wretched winter in 1830–1831 at a campsite west of Decatur, young Abraham left the family to start his own homestead and seek his fortune in Sangamon County.

At some point soon after that purchase, Thomas and Sarah built what was to be their final home, a saddlebag style log cabin with two main rooms and additional sleeping and storage space in a loft or attic accessed by a ladder.

By 1845, the cabin was home to as many as 18 members of the Lincoln and Johnston families, living together in an extended-family arrangement common in Appalachian Southern culture.

Their meeting occurred at the middle-class frame house of prominent Farmington citizen (Sarah's son-in-law and Abraham's step-brother-in-law) Reuben Moore.

[2] In 1893, the original Thomas Lincoln log cabin was disassembled and shipped northward to serve as an exhibit at the World's Columbian Exposition in Chicago, Illinois.

[5] The former location of the CCC's "Camp Shiloh", it qualified as a historical archaeological site, not because of the current buildings or because of any connection to Lincoln.