US-20 takes little more than the proverbial blink of an eye to cross the 45 miles of northwestern Pennsylvania, which is part of Pennsylvania only because the country’s founding fathers thought it was unfair to deny the Keystone State a share of the Lake Erie shoreline.

I-90 is most travelers’ route of choice, but US-20 does have a couple of worthwhile stops.

Map of the Oregon Trail through Pennsylvania and Upstate New York.
Map of the Oregon Trail through Pennsylvania and Upstate New York.