| https://openstreetmap.org/copyright | https://openstreetmap.org |
| Copyright OpenHistoricalMap and contributors, under an open license | |
OpenHistoricalMap
Changes to dates based on wiki and other google sources. PROV and other data used for piers. Some addiional tagging to complete bridges etc
OpenHistoricalMap is an interactive map of the world throughout history, created by people like you and dedicated to the public domain.
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.
Enable overlays for troubleshooting the map
| https://openstreetmap.org/copyright | https://openstreetmap.org |
| Copyright OpenHistoricalMap and contributors, under an open license | |