An advertising technique that seems to have worked for WallDrug.
And Rock City, in Chattanooga, Tennessee: http://www.seerockcity.com/
And Meramec Caverns in Southern Missouri. http://www.americascave.com/
And Anderson Split Pea Soup in Southern California. http://www.peasoupandersens.net/
And South of the Border all along I95 on the USA east coast. http://www.roadsideamerica.com/attract/SCDILsob.html http://www.roadtripamerica.com/places/southof.htm