7 Foot Knoll Lighthouse
This bright red 42-foot high, classic screwpile lighthouse is the oldest surviving of its kind. Built in 1856, it once marked the entrance to the busy Baltimore Harbor at the mouth of the Patapsco River. It was originally designed to carry a third order Fresnel lens, but instead was given a smaller fourth order lens. This light structure eliminated the need for underwater concrete foundations because it was supported by nine cast iron beams on screwpiles that were secured to the bottom of the bay. From 1856 until 1919 the lighthouse was occupied by keepers and their families. From 1920 until 1949 keepers assigned to Seven Foot Knoll worked in pairs, taking turns for shore leave. Then it was automated in 1949. After 133 years of service the lighthouse was deactivated by the Coast Guard and an electric beacon was erected in its place. The lighthouse was relocated to Pier 5 of the Inner Harbor District. Then, in1989 the Seven Foot Knoll Lighthouse was donated to the City of Baltimore and in 1997 it became part of the Baltimore Maritime Museum and was opened to the public. This bright red 42-foot high, classic screwpile lighthouse is the oldest surviving of its kind. Built in 1856, it once marked the entrance to the busy Baltimore Harbor at the mouth of the Patapsco River. It was originally designed to carry a third order Fresnel lens, but instead was given a smaller fourth order lens. This light structure eliminated the need for underwater concrete foundations because it was supported by nine cast iron beams on screwpiles that were secured to the bottom of the bay. From 1856 until 1919 the lighthouse was occupied by keepers and their families. From 1920 until 1949 keepers assigned to Seven Foot Knoll worked in pairs, taking turns for shore leave. Then it was automated in 1949. After 133 years of service the lighthouse was deactivated by the Coast Guard and an electric beacon was erected in its place. The lighthouse was relocated to Pier 5 of the Inner Harbor District. Then, in1989 the Seven Foot Knoll Lighthouse was donated to the City of Baltimore and in 1997 it became part of the Baltimore Maritime Museum and was opened to the public. This bright red 42-foot high, classic screwpile lighthouse is the oldest surviving of its kind. Built in 1856, it once marked the entrance to the busy Baltimore Harbor at the mouth of the Patapsco River. It was originally designed to carry a third order Fresnel lens, but instead was given a smaller fourth order lens. This light structure eliminated the need for underwater concrete foundations because it was supported by nine cast iron beams on screwpiles that were secured to the bottom of the bay. From 1856 until 1919 the lighthouse was occupied by keepers and their families. From 1920 until 1949 keepers assigned to Seven Foot Knoll worked in pairs, taking turns for shore leave. Then it was automated in 1949. After 133 years of service the lighthouse was deactivated by the Coast Guard and an electric beacon was erected in its place. The lighthouse was relocated to Pier 5 of the Inner Harbor District. Then, in1989 the Seven Foot Knoll Lighthouse was donated to the City of Baltimore and in 1997 it became part of the Baltimore Maritime Museum and was opened to the public. This bright red 42-foot high, classic screwpile lighthouse is the oldest surviving of its kind. Built in 1856, it once marked the entrance to the busy Baltimore Harbor at the mouth of the Patapsco River. It was originally designed to carry a third order Fresnel lens, but instead was given a smaller fourth order lens. This light structure eliminated the need for underwater concrete foundations because it was supported by nine cast iron beams on screwpiles that were secured to the bottom of the bay. From 1856 until 1919 the lighthouse was occupied by keepers and their families. From 1920 until 1949 keepers assigned to Seven Foot Knoll worked in pairs, taking turns for shore leave. Then it was automated in 1949. After 133 years of service the lighthouse was deactivated by the Coast Guard and an electric beacon was erected in its place. The lighthouse was relocated to Pier 5 of the Inner Harbor District. Then, in1989 the Seven Foot Knoll Lighthouse was donated to the City of Baltimore and in 1997 it became part of the Baltimore Maritime Museum and was opened to the public.
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