Empires rise and fall. Glaciers disappear. Languages and religions spread from one region to another. Simple dirt paths become busy highways and railways. Modest buildings give way to soaring skyscrapers. And you remember what your neighborhood used to look like. All of it belongs on OpenHistoricalMap.

Our growing community of volunteer contributors includes amateur and professional historians, OpenStreetMap and Wikipedia contributors, GIS specialists, and ordinary people knowledgeable about their surroundings. We are passionate about documenting the world and helping real-world communities tell their stories. To learn more about the community, consult our extensive wiki documentation, visit our discussion forum, read the 利用者の日記, and follow our Mastodon or Bluesky account.

You can start contributing to the map today by creating a free account. We also accept charitable donations through OpenStreetMap U.S., a 501(c)(3) nonprofit organization with tax-exempt status. Your generous donation will go directly toward keeping OpenHistoricalMap running smoothly for everyone.

The map on our homepage is just one of many ways to experience the historical information we’ve collected. The underlying data is available for reuse as a download or through various free APIs compatible with open source software.

データは特記する場合を除きパブリックドメインです。その使用には規制や制約はありません。しかしながら、可能でしたら OpenHistoricalMap に言及もしくは引用していただけると大変ありがたいです。詳細と承認の説明は Copyright and Acknowledgementsをご参照ください。

このサイトおよび関連サービスはコミュニティを代表し、OpenStreetMap U.S.財団の提携団体であるan informal groupが運営しています。OpenHistoricalMap のいずれのサービスの利用も、私たちの定める利用規約、利用規定ならびに当財団のプライバシー・ポリシーの対象となります。

ライセンス、著作権、その他の法的な問題については、contact the OpenHistoricalMap team までお問い合わせください。

OpenHistoricalMap® is a registered trademark (U.S. Reg. No. 90,019,364). OpenStreetMap and the magnifying glass logo are registered trademarks of the OpenStreetMap Foundation.

OpenHistoricalMap is a charter project of OpenStreetMap U.S., a 501(c)(3) nonprofit organization affiliated with the OpenStreetMap Foundation. Technical development is supported by GreenInfo Network and Development Seed.