Did you know that our Ambassador Bridge, connecting Detroit with Windsor, Canada, is one of the busiest international border crossings in all of North America? It's 80 years old and over 1 mile in length. We used to be able to walk across it, but 9/11 and concerns over security changed that. Boo. It's a "Welcome to Detroit Site", when driving up from Toledo on I-75. Everyone loves the lights on the bridge at night.