Information
View an interactive map of landmarks, districts, and other resources included in the Historic Resource Inventory.
Portland’s Historic Resource Inventory (HRI) is a record of the buildings, portions of buildings, structures, objects, landscapes, trees, sites, places, and districts that have been documented as having or potentially having architectural, historical, or cultural significance. The HRI includes historic resources that are subject to land use regulations (such as Historic Landmarks and National Register Districts), as well as historic resources that have been documented but not formally designated or determined to be significant.
Information regarding the historic resources included within the Historic Resources Inventory can be found on the historic resources webmap.