Rudnyy map by OpenStreetMap project. It allow change of map scale; streets and houses search. Contain information about regions division.
If you can't find something, try Yandex map of Rudnyy or Rudnyy map by Google.
See also maps of: Europe, Africa, South America, North America, Asia, Australia
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London, New York City, Paris, Dubai, Delhi, Chicago, Tokyo, Quebec, Oklahoma city, Chennai, Panama city