To be sure, the bridge is a thing of its own kind; for it gathers the fourfold in such a way that it allows a site for it. But only something that is itself a locale can make space for a site. The locale is not already there before the bridge is. Before the bridge stands, there are of course many spots along the stream that can be occupied by something. One of them proves to be a location, and does so because of the bridge. Thus the bridge does not first come to a location to stand in it; rather, a location comes into existence only by virtue of the bridge. The bridge is a thing; it gathers the fourfold, but in such a way that it allows a site for the fourfold. By this site are determined the localities and ways by which a space is provided for.

Only things that are locations in this manner allow for spaces. What the word for space, Raum, Rum, designates is said by its ancient meaning. Raum means a place cleared or freed for settlement and lodging. A space is something that has been made room for, something that is cleared and free, namely within a boundary, Greek πέρας. A boundary is not that at which something stops but, as the Greeks recognized, the boundary is that from which something begins its presencing. That is why the concept is that of ὀρισμός, that is, the horizon, the boundary. Space is in essence that for which room has been made, that which is let into its bounds. That for which room is made is always granted and hence is joined, that is, gathered, by virtue of a location, that is, by such a thing as the bridge. Accordingly, spaces receive their being from locations and not from "space."

Things which, as locations, allow a site we now in anticipation call buildings. They are so called because they are made by a process of building construction. Of what sort this making—building—must be, however, we find out only after we have first given thought to the nature of those things which of themselves require building as the process by which they are made. These things are locations that allow a site for the fourfold, a site that in each case provides for a space. The relation between location and space lies in the nature of these things qua locations, but so does the relation of the location to the man who lives at that location.

GA 7 p. 156