Cultureshed

The tunnel, the highest in the Alps at 5,971 feet, marks both a watershed and cultureshed. On the north, all the water flows to the North Sea; on the south, the water goes to the Black Sea. […] And here the German and Romansch languages give way to Italian.

Source: wiktionary

2000, Marilyn Sifford, "Issue-Oriented Future Search: Creating a Frame," Future Searching No. 19, Summer/Fall 2000. The planning committee spent a great deal of time exploring the idea of a regional “cultureshed.” Cultural heritage does not usually begin and end at city, county, or state borders. As a watershed is based on the natural flow of rivers and streams, the concept of a “cultureshed” encourages us to rise above institutional and geographic boundaries to take an eagle’s eye view of the region and its history.

Source: wiktionary

McKibben makes the great lake a hinge that binds the long lands on either side of it into a “cultureshed” bounded not by the cartography of politics but by his own deep knowledge of it. He’s not implying there’s some commonality of civic style or taste; .... What frames his vision of this stitched-together territory — “Adimont? The Verondacks?” — is the spirit of innovation and respect some people are bringing to its use.

Source: wiktionary

2013, John Lorinc, "The City as Cultureshed," in A. Wilcox, C. Palassio, J. Dovercourt, The State of the Arts: Living With Culture in Toronto, Coach House Books, 2013. That's why we should begin to think of cities as "culturesheds" - deeply interconnected social, physical and economic systems that may be more or less attuned to the circulation of artistic ideas.

Source: wiktionary