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Gaston is home to Peachtree Rock, located on the headwaters of Hunt Branch, right off of Highway 6 on Peachtree Rock Road.
Montana State Highway 17 in Glacier National Park becomes Alberta Highway 6 in Waterton Lakes National Park as it crosses the Canada–United States border at Chief Mountain.
In the Cassino area of Italy, the Canadian Provost assisted the British CMP on "Highway 6", where 11,000 vehicles were handled every day.
Southwest of Emida and just east of Highway 6 is the site of North–South Ski Bowl, a former alpine ski area in the Hoodoo Mountains.
When it is concurrent with U.S. Highway 6, it is the Grand Army of the Republic Highway.
The corporate offices are now located in the Crystal Park Plaza just off of the General James Earl Rudder Highway (Texas State Highway 6) in College Station, Texas.