Lighthouses are always great subjects for photography, as they often are located in picturesque locations and their architecture makes them stand out from their surroundings (intentionally).

The lighthouse at Bass Harbor on Mount Desert Island, Maine, sits on the rugged rocks on the southern tip of the island. Of course, Mount Desert Island is best known as the home of Acadia National Park, which is a truly gorgeous park with lots of trails and easy access to many areas, including Cadillac Mountain.
This lighthouse dates back to the 19th century with the original monies for its construction being appropriated by Congress in 1855 and its construction completing in 1876.
On the day that we visited the area, it was nigh impossible to get a wider angle view of the lighthouse without a significant number of tourists in the shot, so I opted to frame the shot with the trees, which I think worked pretty well.
Technical Details
This image was captured with a Canon EOS 5D Mk III using an EF 24-105mm f/4 lens. Exposure settings were 1/40 second at f/10 and 160 ISO.