Point Reyes is a treacherous obstacle to mariners being the windiest place on the Pacific Coast and
the second foggiest place on the North American continent. Weeks of fog, especially during the summer
months, frequently reduce visibility to hundreds of feet. The Point Reyes Headlands, which jut 10 miles
out to sea, pose a threat to each ship entering or leaving San Francisco Bay. The historic Point Reyes
Lighthouse built in 1870, warned mariners of danger for more than a hundred years.