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

Clam Lake Canal

in 1873 the Clam Lake canal was constructed between Big and Little Clam lakes present-day Lake Mitchell and Cadillac.  Lumbering was the major industry in the Clam Lake area and saw mill owners...

in 1873 the Clam Lake canal was constructed between Big and Little Clam lakes present-day Lake Mitchell and Cadillac.  Lumbering was the major industry in the Clam Lake area and saw mill...

  • michigan
  • lumbering

Who Knew Above All Things The Magic of Books

  • susskind

Allison Van Norman

    North Branch Library

      McAdam Railway Station

      Submitted by @bthubbard

      Submitted by @bthubbard

        Don Messer

        Submitted by @bthubbard

        Submitted by @bthubbard

        • fiddler
        • messer

        The Linden Oak

        THE LINDEN OAK The oldest White Oak tree in Montgomery County was saved from destruction by the Metro construction in 1973 by Idamae Garrott. A great champion of the people and of the environment,...

        THE LINDEN OAK The oldest White Oak tree in Montgomery County was saved from destruction by the Metro construction in 1973 by Idamae Garrott. A great champion of the people and of the environment,...

        • linden oak
        • imageryan
        • montgomery
        • maryland

        Cincinnati Union Terminal Time Capsule

        Submitted by @kevl42

        Submitted by @kevl42

          Cincinnati Union Terminal

          Submitted by @kevl42

          Submitted by @kevl42

            Tomb of an Unknown Soldier

            Submitted by @DaraGreen

            Submitted by @DaraGreen

            • civil war
            • signal knob

            Over the Rhine

            [Location approximate]Submitted by @kevl42

            [Location approximate]Submitted by @kevl42

            • ohio
            • rhine
            • canal

            Anne Frank's Tree

            Submitted by @joepevans

            Submitted by @joepevans

            • wwii
            • holocaust
            • anne frank

            Hotel Whitcomb Temporary City Hall 1912 to 1915

              Lincoln, SF City Hall

                Darwin studies geology

                The location at which Charles Darwin first used a clinometer to measure the tilt of geological strata.Submitted by Alistair Wylie

                The location at which Charles Darwin first used a clinometer to measure the tilt of geological strata.Submitted by Alistair Wylie

                • charles darwin
                • geology
                • clinometer
                • adam sedgwick

                Duck Lane, Builth Wells

                Origins of Duck Lane, Builth WellsSubmitted by: Alistair Wylie

                Origins of Duck Lane, Builth WellsSubmitted by: Alistair Wylie

                • ducks
                • builth wells

                Newton County, CSA

                Supply and military center in the Civil War. Target area for Federals trying to move up the Sabine or across Louisiana and take Texas. Confederates built breastworks and maintained arsenal at...

                Supply and military center in the Civil War. Target area for Federals trying to move up the Sabine or across Louisiana and take Texas. Confederates built breastworks and maintained arsenal at...

                • texas
                • civil war

                Deweyville

                Original site, called "Possum Bluff," was purchased for $200 by Pierre Lavine from H.L. Morrison in 1886. The Sabine Tram Company purchased the land in 1897 from G. Smyth and a sawmill was built...

                Original site, called "Possum Bluff," was purchased for $200 by Pierre Lavine from H.L. Morrison in 1886. The Sabine Tram Company purchased the land in 1897 from G. Smyth and a sawmill was built...

                • texas

                Swift Cemetery

                The trading village of Salem was founded in 1835 by Seth Swift. A Quaker and whaling merchant, Swift had moved to this area from Massachusetts with his wife, Lydia, and six children. When Lydia...

                The trading village of Salem was founded in 1835 by Seth Swift. A Quaker and whaling merchant, Swift had moved to this area from Massachusetts with his wife, Lydia, and six children. When...

                • texas
                • cemetery

                Trout Creek Cemetery

                Originally a part of the James West Survey, this cemetery dates to the early 1860s. The land was later owned by Mrs. Frances Ann Dyer (d.1890), and upon her death was inherited by her daughter...

                Originally a part of the James West Survey, this cemetery dates to the early 1860s. The land was later owned by Mrs. Frances Ann Dyer (d.1890), and upon her death was inherited by her daughter...

                • texas
                • cemetery