Windsor is the southernmost city in Canada and lies at the western end of the heavily populated Quebec City-Windsor Corridor. Windsor is located directly south of Detroit and is separated from that city by the Detroit River. The city has views of the Detroit skyline. Windsor-Detroit is the busiest commercial border crossing in North America, with the Ambassador Bridge carrying 27 percent of the total trade between the U.S. and Canada. The region marks the only border crossing where entering the mainland United States from Canada involves travelling north. The current mayor of Windsor is Eddie Francis.