For glacial polish and striations, hike Mt Cube or Mt Smarts (both part of the Appalachian Trail)
For erratics, you’ll find them if you drive or walk around long enough!
For ice falls, go to the Kancamagus Highway in winter
For water-carved bedrock, check out the Lost River Gorge in summer
For varves from the Last Ice Age, travel to the Upper Valley
For science, check out the Mt Washington Museum in North Conway