Where is Tri-Cities?

Tri-Cities - Charlotte Tri-Cities - Idaho Tri-Cities - Las Vegas Tri-Cities - New York Tri-Cities - Reno Tri-Cities - Seattle Tri-Cities - Silverwood Theme Park Tri-Cities - Spokane Tri-Cities - Veneta Tri-Cities - Walla Walla Tri-Cities - Wenatchee Tri-Cities - Yakima Tri-Cities - Leavenworth Tri-Cities - Pullman Tri-Cities - Oregon Tri-Cities - Vancouver Tri-Cities - Idaho Falls Tri-Cities - Salt Lake City Tri-Cities - Washington Tri-Cities - Portland Tri-Cities - Quincy Tri-Cities - Auburn Tri-Cities - Everett Tri-Cities - Ellensburg