The Principia College campus is open for visits and tours.
Monday–Saturday: 10 a.m.–Sunset
Principia College is located in Elsah, Illinois, 12 miles north of Alton, off the Great River Road, Route 100. To reach the campus entrance, turn right at Elsah Road, bearing right to Mill Street. Go halfway through the village of Elsah to the first stop sign. Turn right and go up the hill.
If using GPS, the coordinates for the gatehouse are: Latitude: 38.9555, Longitude: -90.3475