When looking for Lighthouses using coordinates, be VERY careful. My Garmin Nuvi 660 (replaced by the 680 after this) really went wrong. We put in the Long\Lat for Fort Washington Light in MD. It guided us south into Virginia south along the Potomac river, then it told me to turn left. If I did, I would have driven through a road divider, across oncoming traffic, then into the river. After lodging a complaint with Garmin, they said the coordinates were IN the river by about 10 feet according to their maps. So their unit was correct, crossing the river was the fastest way to the lighthouse.

Don't get me wrong, you could see the light from where it said turn left, but swimming has never a part of a LH Challenge... as of yet.