Ambassador Bridge, Detroit

This impressive landmark spans the Detroit River west of the twin downtowns of Detroit and Windsor. Ambassador Bridge rises 150 feet above the river, allowing even the tallest ships to pass easily underneath. The view from the bridge is panoramic, on a clear day encompassing both cities, the river, and St. Clair and Erie Lakes. Its length of 9,200 feet made it the longest suspension bridge in the world when it opened in 1929. It is the busiest border crossing in North America, with more than 10 million vehicles annually. Many of those are trucks, and 27 percent of all merchandise traded between the United States and Canada passes over the bridge. It can be easily reached from I-96 or I-75 and connects via Huron Church Road in Windsor to Highway 401, which leads to Toronto. Expanded customs plazas at both ends of the bridge have eased the congestion, but expect delays of a half-hour or more at peak crossing times.