Restored retreat where Lincoln drafted the Emancipation Proclamation, site deemed a national monument by Bill Clinton in 2000. Tour guides use interactive tablets throughout hour-long tour. Education center. Guided tours only, reservations online. "American By Belief," the 16th president's little-known immigration policies, ongoing. Mon.-Sat. first tour 10 a.m., last tour 3 p.m. Visitor Center 9:30 a.m.-4:30 p.m.; Sun. first tour 11 a.m., last tour 3 p.m. Visitor Center 10:30 a.m.-4:30 p.m. $15, military $12, children (6-12) $5.