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

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

                      "Compy Copmomizzo" Municipal Fishing Pier

                      U.E. "COMPY" COMPOMIZZO MUNICIPAL FISHING PIER "GET HOOKED ON FISHİNG.NOT DRUGS" DEDICATED THIS 4th DAY OF JULY, 2000    

                      U.E. "COMPY" COMPOMIZZO MUNICIPAL FISHING PIER "GET HOOKED ON FISHİNG.NOT DRUGS" DEDICATED THIS 4th DAY OF JULY, 2000  

                        Jerome Waldie Plaza

                        JEROME WALDIE PLAZA IN APPRECIATION TO A NATIVE SON OF ANTIOCH FOR MANY YEARS OF DEDICATED PUBLIC SERVICE IN THE STATE LEGISLATURE AND U.S. CONGRESSOCTOBER 1988

                        JEROME WALDIE PLAZA IN APPRECIATION TO A NATIVE SON OF ANTIOCH FOR MANY YEARS OF DEDICATED PUBLIC SERVICE IN THE STATE LEGISLATURE AND U.S. CONGRESSOCTOBER 1988

                          All Wars Memorial

                          DEDICATED TO THE CONTRA COSTA COUNTY  ALL WARS MEMORIAL  BY THE GOLDEN GATE CHAPTER VETERANS OF THE BATTLE OF THE BULGE 11 NOVEMBER 1999 "LET WE FORGET"

                          DEDICATED TO THE CONTRA COSTA COUNTY  ALL WARS MEMORIAL  BY THE GOLDEN GATE CHAPTER VETERANS OF THE BATTLE OF THE BULGE 11 NOVEMBER 1999 "LET WE FORGET"

                          • battle of the bulge
                          • all wars

                          Brentwood Gateway

                            Livermore Masonic Building

                            MASONIC BUILDING BUILT 1909 MOSAIC LODGE 218 FREE AND ACCEPTED MASONS CITY OF LIVERMORE HISTORIC PRESERVATION HERITAGE SITE DEDICATED JULY 1996   Submitted by @jqmcd

                            MASONIC BUILDING BUILT 1909 MOSAIC LODGE 218 FREE AND ACCEPTED MASONS CITY OF LIVERMORE HISTORIC PRESERVATION HERITAGE SITE DEDICATED JULY 1996   Submitted by @jqmcd