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

First Marine Compound Engine

The first vessel in the world propelled by a Compound Steam Engine was the REINDEER built for service on the Saint John River. Both the vessel and engine were designed by Benjamin Tibbits, a...

The first vessel in the world propelled by a Compound Steam Engine was the REINDEER built for service on the Saint John River. Both the vessel and engine were designed by Benjamin Tibbits,...

    Lynching in Duluth

    Submitted by @LarsonForDuluth

    Submitted by @LarsonForDuluth

    • eji

    Bolen Cemetery in Shenandoah National Park

    Submitted by DoubleDag

    Submitted by DoubleDag

      Hogsback

      НOGBACKS Interstate 25 cuts through dip- ping strata that form hogback ridges between the Great Plains and the south end of the Rocky Mountains. The Santa Fe Trail from here to Santa Fe, followed...

      НOGBACKS Interstate 25 cuts through dip- ping strata that form hogback ridges between the Great Plains and the south end of the Rocky Mountains. The Santa Fe Trail from here to Santa Fe,...

        El Pueblo de la Reina de Los Angeles

        This plaque marks the boundary of the original northeast corner of El Pueblo de la Reina de Los Angeles, founded on September 4, 1781, and established by survey in 1849. Submitted by cjosephjordan

        This plaque marks the boundary of the original northeast corner of El Pueblo de la Reina de Los Angeles, founded on September 4, 1781, and established by survey in 1849. Submitted by cjosephjordan

          The Joan of Arc Jarden

          Submitted by @kmbmarshall

          Submitted by @kmbmarshall

            The Ritz Hotel, London

            Submitted by @benjiw

            Submitted by @benjiw

              In Memory of Michael O. D. Brown

              Submitted by @brian_warth

              Submitted by @brian_warth

                Embarcadero Transit Markers

                Submitted by @xor

                Submitted by @xor

                  Avery Island Buddha Shonfa Temple

                    Hook & Ladder #4

                      Nat Turner's Insurrection

                        Porter's Anti-Pirate Fleet

                        An outbreak of piracy in 1822 prompted the United States to organize the West Indian Squadron, an anti-pirate fleet. Commanded by Commodore David Porter, the squadron in 1823 included 17 ships and...

                        An outbreak of piracy in 1822 prompted the United States to organize the West Indian Squadron, an anti-pirate fleet. Commanded by Commodore David Porter, the squadron in 1823 included 17 ships...

                          Trinity Site

                          Submitted by @LillyJAdams

                          Submitted by @LillyJAdams

                            Mann House

                            Mann House Designed by architect Norman Thomson, this 1912 home belonged most notably to Saskatoon City Councillor and University of Saskatchewan professor, Owen Mann. Coming to Saskatoon on an...

                            Mann House Designed by architect Norman Thomson, this 1912 home belonged most notably to Saskatoon City Councillor and University of Saskatchewan professor, Owen Mann. Coming to Saskatoon on...

                            • mann
                            • house
                            • saskatoon
                            • heritage property

                            Royal Exhibition Building

                              The Black Whipple Family

                                Old Town Albuquerque

                                Submitted by @AnjaTEAgle

                                Submitted by @AnjaTEAgle

                                  George Gershwin

                                  • rhapsody in blue

                                  Ross Alley

                                  Submitted by friscolex

                                  Submitted by friscolex