A gigantic map of all the cool plaques in the world. A project of 99% Invisible.

The Cape Ray Telegraph Cable

From the Flickr group Historical Markers, photo by HystericalMark, full page.License is Attribution-ShareAlike License

From the Flickr group Historical Markers, photo by HystericalMark, full page.License is Attribution- ShareAlike License

    World's Largest Limestone Quarry

    Limestone is a mineral raw material essential in making steel, chemicals, and cement. Henry H. Hindshaw, a geologist, established in 1908-09 the commercial value of this area’s limestone for...

    Limestone is a mineral raw material essential in making steel, chemicals, and cement. Henry H. Hindshaw, a geologist, established in 1908-09 the commercial value of this area’s limestone...

    • michigan
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    River Street

      Gagetown / Gagetown

      Brothers Joseph and James Gage immigrated from Canada in 1860. Joseph filed a homestead claim in Elmwood Township. In 1869, Joseph built a store and mill on his land. Two years later, he platted...

      Brothers Joseph and James Gage immigrated from Canada in 1860. Joseph filed a homestead claim in Elmwood Township. In 1869, Joseph built a store and mill on his land. Two years later, he...

      • michigan
      • michigan his...

      Indian Landing- Charlton Park

      In the early nineteenth century the Thornapple band of Ottawa Indians established a village a short distance from Thornapple Lake. It was served in the 1840s by a Methodist mission and school...

      In the early nineteenth century the Thornapple band of Ottawa Indians established a village a short distance from Thornapple Lake. It was served in the 1840s by a Methodist mission and...

      • michigan
      • michigan his...

      Grant Water Tower

      Among the last of the wooden water towers in Michigan, the Grant Water Tower was built beside the depot in 1891 by the Grand Rapids, Newaygo and Lakeshore Railroad. It cost $1,910 and could hold...

      Among the last of the wooden water towers in Michigan, the Grant Water Tower was built beside the depot in 1891 by the Grand Rapids, Newaygo and Lakeshore Railroad. It cost $1,910 and could...

      • michigan
      • michigan his...

      John C. Blanchard / John and Harriet Blanchard House

      John Celsus Blanchard (1822-1905) epitomizes the American “self-made man.” He left his home in Cayuga County, New York, at age fourteen, bound for the western frontier. Blanchard worked as a...

      John Celsus Blanchard (1822-1905) epitomizes the American “self-made man.” He left his home in Cayuga County, New York, at age fourteen, bound for the western frontier. Blanchard worked as...

      • michigan
      • michigan his...

      Newburgh Cemetery

      An organization, later known as the Newburgh Cemetery Society, was formed on November 23, 1832, to establish and maintain this cemetery, the first in the present city of Livonia. One grave, that...

      An organization, later known as the Newburgh Cemetery Society, was formed on November 23, 1832, to establish and maintain this cemetery, the first in the present city of Livonia. One grave, that...

      • michigan
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      Bay View Association / Bay View

      Beginning in 1875 as a Methodist camp, the Bay View Association encouraged scientific and intellectual development within a religious community. In 1885 John M. Hall of Flint began the summer...

      Beginning in 1875 as a Methodist camp, the Bay View Association encouraged scientific and intellectual development within a religious community. In 1885 John M. Hall of Flint began the summer...

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      No Home on the Home Front

      • wwii
      • japanese internment
      • richmond

      Divided We Live

      • richmond
      • rosie the riveter
      • jim crow

      Rosie the Riveter Memorial

      • wwii
      • rosie the riveter
      • richmond

      Transforming the Waterfront

      • richmond
      • rosie the riveter

      Shipyard Stories

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      • kaiser

      Friendship Park

      FRIENDSHIP PARK Dedicated November 26, 1991 In Commemoration of Thirty Years Sister City Affiliation Between Shimada, Japan and Richmond, California

      FRIENDSHIP PARK Dedicated November 26, 1991 In Commemoration of Thirty Years Sister City Affiliation Between Shimada, Japan and Richmond, California

      • richmond
      • shimada
      • japan

      WSI, I,KEM

      WSI, I,KEM WAS A TSEYCUM FIRST NATION   FOOD HARVESTING GROUND FOR  OVER 10,000 YEARS  

      WSI, I,KEM WAS A TSEYCUM FIRST NATION   FOOD HARVESTING GROUND FOR  OVER 10,000 YEARS

        Nymph Point Heritage Site

        NYMPH POINT WAS DESIGNATED A HERITAGE SITE ON JUNE 7, 1982 BYT HE HERITAGE COMMITTEE OF NORTH SAANICH

        NYMPH POINT WAS DESIGNATED A HERITAGE SITE ON JUNE 7, 1982 BYT HE HERITAGE COMMITTEE OF NORTH SAANICH

          Horton Bay

          Named for pioneer settler Samuel Horton, this village was founded as a lumbering community in 1876, complete with sawmill, shanty boys, boarding house, company store, blacksmith shop, and draft...

          Named for pioneer settler Samuel Horton, this village was founded as a lumbering community in 1876, complete with sawmill, shanty boys, boarding house, company store, blacksmith shop, and...

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          USCG Cutter Mackinaw WAGB 83

          Built in 1944 at a cost of $10 million, U.S. Coast Guard cutter MACKINAW had six ten-cylinder engines that enabled it to cut through several feet of lake ice. The powerful steel icebreaker was...

          Built in 1944 at a cost of $10 million, U.S. Coast Guard cutter MACKINAW had six ten-cylinder engines that enabled it to cut through several feet of lake ice. The powerful steel icebreaker...

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          The Douglas House / Thomas Douglas

          Canadian-born entrepreneur Thomas E. Douglas constructed a sawmill and general store in the logging community of Lovells around 1898. He erected a new store in 1903 after fire destroyed the first...

          Canadian-born entrepreneur Thomas E. Douglas constructed a sawmill and general store in the logging community of Lovells around 1898. He erected a new store in 1903 after fire destroyed the first...

          • michigan
          • michigan his...