A to Z place I've been (lifted from skyring)

This was harder than I expected!

Alabama
Boston
Cortina d'Ampezzo
Delaware
Ellicottville
Falls Church
Georgetown
Honolulu
Ischua
Java Center
Kailua-Kona
Los Angeles
Monte Carlo
Nice
Orlando
Potsdam
Quebec
Rochester
Syracuse
Toronto
Uniontown
Venice
Williamsburg
Xerox PARC (Palo Alto Research Center)
Yellowstone National Park
Zermatt