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

Harry Ells School

    Richmond Public Library A.D. 1923

      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

                Simon Bolivar

                  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