Bolu region map by OpenStreetMap engine. It allow change of map scale; streets and houses search - in most of sities. If you can't find something, try Yandex map of Bolu region or Bolu region map by Google.
See also capital of Bolu region: Bolu map
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<a href="https://world-maps.pro/osm/Bolu_region_map">Bolu region map (Turkey, Asia) - Open Street Map</a>
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