Possible Clues:

• Sections of trunk road in city
• See, it's torn up root in odd places
• Hear of loyal soldiers retreating in English city
• City and administrative centre of Cornwall
• Southwest city turned out to keep two rivers apart
• Rambling tour including river and town in Cornwall
• Cornwall's only city
• City of Cornwall
• The Island of Doctor - (H. G. Wells)
• Town near the tip of Cape Cod