Thousand Islands level year-round, and support at least two living trees. The Thousand Islands archipelago is located at the outlet of Lake Ontario at the head of the Saint Lawrence River. The region is bisected by the Canada–United States border and covers portions of Jefferson and St. Lawrence counties in the U.S. state of New York, in addition to parts of the United Counties of Leeds and Grenville and Frontenac County in the Canadian province of Ontario. Geologically, most of the islands are located where a branch of the Canadian Shield runs south across the river to join with the Adirondacks. The
Thousand Islands Playhouse Thousand Islands Playhouse The Thousand Islands Playhouse is a summer theatre company located in Gananoque, Ontario, Canada. It was founded in 1981 by Greg Wanless and a group of local actors and graduates from Queen's University including Timm Hughes, Joan Gardiner, Mo Bock, and Kathryn Mackay. Artistic Director Wanless and Assistant Artistic Director Mackay retired at the end of the 2012 season. The current Artistic Director is Ashlie Corcoran, and the Associate Artistic Director is Rob Kempson. Thousand Islands Playhouse operates two theatres, the former Gananoque Canoe Club building as the 348-seat Springer Theatre in which musicals and larger plays