Point Reyes has long been a threat to mariners in the California area and the Point Reyes Lighthouse has offered a beacon of safety to many ships and sailors. The point is the windiest place on the Pacific Coast and the second foggiest on the entire continent. Visibility can be reduced up to hundreds of feet during the foggiest summer months. The point threatens ships entering and leaving the San Francisco Bay, especially under such treacherous conditions. The lighthouse was built in 1870 and retired in 1975 when an automatic light was installed by the United States Coast Guard. The lighthouse is now owned by the National Park Service who operates the lighthouse as they would a national historic destination. Visitors can tour the lighthouse today Thursdays, Fridays, Saturdays, Sundays and Mondays between 10 am and 4:30 p. In addition to seeing the lighthouse and the point, visitors can view photographs of the shipwrecks triggered by the point, photos of the lighthouse keepers, and a variety of educational products. There is also a bookstore where visitors can take home books and maps from the area. Keep in mind that when wind speeds reach 40 miles per hour, the lighthouse will be closed for tours. During whale-watching seasons visitors must ride the shuttle bus to reach the lighthouse because the access road is closed to all vehicles accept private ones.