This photo is a view down the long roadway on Belle Isle, an island in the middle of the Detroit River between the state of Michigan and Ontario, Canada. It’s design originates from the 1880s, but was not completed as designed.
Clicking on the image reveals that there are no automobiles visible, partly because it is very early in the automobile era, and partly because the island had no road access at that time. It is now connected with a bridge from the Michigan side, and is managed as a Michigan state park.
This card was used and is dated 20 August 1908.