Free images results:
 

Cobble pictures, stock photos and images

 
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Old Town Stock Image
Author: Allein
Back alley Stock Image
Author: Pelt69
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Cobble Stock Photo
Author: Kunertus
Cobble Royalty Free Stock Photos
Author: Bedo
Cobble Stock Photo
Author: Bernjuer