Portland in Cumberland County, Maine — The American Northeast (New England)
National Historic Landmark
This site possesses national significance
in commemorating the history of the
United States of America.
The Observatory is the nation's only remaining maritime signal tower. It served as a communication station for Portland's bustling harbor brom 1807 to 1923, announcing the arrival of ships with a unique system of colorful signal flags.
National Historic Civil Engineering Landmark
One of the earliest marine signal stations in the United States, this tower is unique in its engineering design and construction and contributed to the prosperity of Portland harbor as a vital center of maritime commerce during the "Golden Age of Sail"
Erected 2006 by National Park Service and Maine Section, American Society of Civil Engineers.
Marker series. This marker is included in the Historic Civil Engineering Landmarks, and the National Historic Landmarks marker series.
Location. 43° 39.92′ N, 70° 14.896′ W. Marker is in Portland, Maine, in Cumberland County. Marker is on Congress Street near North Street, on the right when traveling north. Touch for map. Marker is at or near this postal address: 138 Congress Street, Portland ME 04101, United States of America.
Other nearby markers. Charles F. Eastman (within shouting distance of this marker); Alonzo P. Stinson (approx. 0.2 miles away); Portland Maine Freedom Trail Eastern Cemetery (approx. 0.2 miles away); Christopher Christian Manuel (approx. 0.2 miles away); Eastern Cemetery (approx. ¼ mile away); Joseph Coffin Boyd (approx. ¼ mile away); Reverend William I. Reese (approx. ¼ mile away); Rear Admiral James Alden (approx. ¼ mile away). Touch for a list and map of all markers in Portland.
Also see . . . History of Portland Observatory. (Submitted on December 12, 2011, by William Fischer, Jr. of Scranton, Pennsylvania.)
Categories. • Communications • Industry & Commerce • Man-Made Features • Waterways & Vessels •
Credits. This page was last revised on June 16, 2016. This page originally submitted on December 12, 2011, by William Fischer, Jr. of Scranton, Pennsylvania. This page has been viewed 531 times since then. Photos: 1, 2, 3, 4, 5, 6, 7, 8. submitted on December 12, 2011, by William Fischer, Jr. of Scranton, Pennsylvania.