One of the best of the many Lincoln sites in the state of Illinois is the actual house that Lincoln lived in during his time in Springfield. The house has been refurbished in recent years and maintained by the National Park service that owns a good chunk of land around the house to preserve the neighborhood where Lincoln once lived.
You can visit the house during your visit to Springfield – however, tickets are very limited. You should plan your visit to see the house first, or at least to stop by the visitor’s center and get a ticket to come back later. Tickets are free, but first come, first served.
Here’s my interview with National Park Service Ranger, Dale Phillips about the importance of the Lincoln home site and some interesting history about the house and surrounding buildings.