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

Davis Museum

    Coast Live Oak

    THE COAST LIVE OAK TREES THAT GRACE LOS RIOS PARK WERE GENEROUSLY DONATED BY MS. JOAN IRVINE SMITH IN 2009. MS. SMITH'S SENSE OF STEWARDSHIP FOR LAND, AND PASSION FOR ENVIRONMENTAL PRESERVATION...

    THE COAST LIVE OAK TREES THAT GRACE LOS RIOS PARK WERE GENEROUSLY DONATED BY MS. JOAN IRVINE SMITH IN 2009. MS. SMITH'S SENSE OF STEWARDSHIP FOR LAND, AND PASSION FOR ENVIRONMENTAL...

      Jackson Mine

      On this spot on September 19, 1844, William A. Burt, a deputy government surveyor, was the first to discover the great Lake Superior iron ore deposits. Peculiar fluctuations in his magnetic...

      On this spot on September 19, 1844, William A. Burt, a deputy government surveyor, was the first to discover the great Lake Superior iron ore deposits. Peculiar fluctuations in his...

      • michigan
      • michigan his...

      Andrew Carnegie Mansion

        Willow Run (1941-1953) / Willow Run (1953-present)

        After entering World War II in 1941, America desperately needed military equipment and supplies. The Ford Motor Company had begun building this factory in April 1941. Outstanding industrial...

        After entering World War II in 1941, America desperately needed military equipment and supplies. The Ford Motor Company had begun building this factory in April 1941. Outstanding industrial...

        • michigan
        • michigan his...

        Croton Hydroelectric Plant

        The Grand Rapids - Muskegon Power Company (a predecessor to today's Consumers Energy Company) built the Croton Hydroelectric Plant in 1906 - 1907. The plant and its 110,000-volt transmission line...

        The Grand Rapids - Muskegon Power Company (a predecessor to today's Consumers Energy Company) built the Croton Hydroelectric Plant in 1906 - 1907. The plant and its 110,000-volt transmission line...

        • michigan
        • michigan his...

        Spirit Catcher

        The donation of the SPIRIT CATCHER in 1986 inspired the establishment of a public art gallery in Barrie. The Barrie Gallery Project opened to the public in 1988 and in 1992 became the MacLaren Art...

        The donation of the SPIRIT CATCHER in 1986 inspired the establishment of a public art gallery in Barrie. The Barrie Gallery Project opened to the public in 1988 and in 1992 became the MacLaren Art...

          Bohemian Monterey

          1874 Bohemian Monterey World renowned artist Jules Tavernier established a studio in Monterey. A bohemian culture soon followed as Monterey became a favorite ocean-side retreat for artists and writers.

          1874 Bohemian Monterey World renowned artist Jules Tavernier established a studio in Monterey. A bohemian culture soon followed as Monterey became a favorite ocean-side retreat for artists and writers.

            First Bomb of World War One

            FIRST BOMB OF WORLD WAR ONE To be dropped on London by Zeppelin LZ38fell on this house 31 May 1915 Submitted by @DrFidelius

            FIRST BOMB OF WORLD WAR ONE To be dropped on London by Zeppelin LZ38fell on this house 31 May 1915 Submitted by @DrFidelius

              Ludington Hotel

              In 1864 E. Gaynor built the Gaynor House hotel, which he renamed the Ludington House in 1871 after lumberman Nelson Ludington. In the late 1880s proprietor John Christie enlarged the hotel and...

              In 1864 E. Gaynor built the Gaynor House hotel, which he renamed the Ludington House in 1871 after lumberman Nelson Ludington. In the late 1880s proprietor John Christie enlarged the hotel...

              • michigan
              • michigan his...

              Allegheny County Courthouse and Jail

              From the Flickr group Historical Markers, photo by sportsedit15224, full page.License is Attribution-NonCommercial-ShareAlike License

              From the Flickr group Historical Markers, photo by sportsedit15224, full page.License is Attribution- NonCommercial-ShareAlike License

                Crosby Hall

                Crude oil experiments at Crosby Hall (@dartmouth ) helped lead to the early petroleum industry. Submitted by @LostToHistory

                Crude oil experiments at Crosby Hall (@dartmouth ) helped lead to the early petroleum industry. Submitted by @LostToHistory

                  Dr. Jose P. Rizal Community Center

                  “He visited places of interest and left the city at 8:25 p.m.” https://t.co/u3wMZcBWyr TweetSubmitted by @robertloerzel

                  “He visited places of interest and left the city at 8:25 p.m.” https://t.co/u3wMZcBWyr TweetSubmitted by @robertloerzel

                    Kiesling House

                    @readtheplaque Kiesling House. New Ulm, MN #readtheplaque https://t.co/eWI2aAdW23 TweetSubmitted by @robblerouser

                    @readtheplaque Kiesling House. New Ulm, MN #readtheplaque https://t.co/eWI2aAdW23 TweetSubmitted by @robblerouser

                      New Ulm's Glockenspiel

                      Submitted by @robblerouser

                      Submitted by @robblerouser

                        Antioch City Hall

                        CITY HALL DEDICATED NOVEMBER 29 1980 TO THE CITIZENS OF ANTIOCH   CORNERSTONE CEREMONY NOV 29, 1980 GRAND LODGE FREE & ACCEPTED MASONS OF CALIFORNIA      

                        CITY HALL DEDICATED NOVEMBER 29 1980 TO THE CITIZENS OF ANTIOCH   CORNERSTONE CEREMONY NOV 29, 1980 GRAND LODGE FREE & ACCEPTED MASONS OF CALIFORNIA    

                          War Dog Memorial

                          • war dog
                          • egor

                          Eugene Field

                          IN DEDICATION TO EUGENE FIELD 1850-1895 THE CHILDREN'S POET "WYNKEN, BLYNKEN AND NOD" "THE DUEL" "LITTLE BOY BLUE" "WITH BIG TIN TRUMPET AND LITTLE RED DRUM MARCHING LIKE SOLDIERS. THE CHILDREN...

                          IN DEDICATION TO EUGENE FIELD 1850-1895 THE CHILDREN'S POET "WYNKEN, BLYNKEN AND NOD" "THE DUEL" "LITTLE BOY BLUE" "WITH BIG TIN TRUMPET AND LITTLE RED DRUM MARCHING LIKE SOLDIERS. THE CHILDREN...

                            Eureka Slope

                            • coal
                            • eureka

                            A

                            FROM 1860 TO 1906, THIS WAS THE LARGEST COAL MINING DISTRICT IN CALIFORNIA. FIVE TOWNS (NORTONVILLE, SOMERSVILLE, STEWARTSVILLE, JUDSONVILLE, AND WEST HARTLEY) GREW UP AROUND TWELVE MAJOR MINES....

                            FROM 1860 TO 1906, THIS WAS THE LARGEST COAL MINING DISTRICT IN CALIFORNIA. FIVE TOWNS (NORTONVILLE, SOMERSVILLE, STEWARTSVILLE, JUDSONVILLE, AND WEST HARTLEY) GREW UP AROUND TWELVE MAJOR MINES....

                            • ecv
                            • coal
                            • tailings
                            • railroad beds
                            • the towns are gone