In settler societies such as Australia, the colonial state actively produced its territory to secure it from its former Aboriginal owners. Imperial spatial technologies, including exploration, surveying, mapping, (re)naming, and classification of land and its potential uses, were the primary means of this activity. These were the early foundations of planning as a form of statebased action to secure the ordering of space, the production of knowledge about space, and the organizing of action within space. Through an examination of contemporary environmental planning and its historical roots, this article shows how planning practice continues to be structured by specifically colonial imaginings of place, which serve to continue the erasure of Aboriginal philosophies, knowledge, and relationships with place.