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

Nuclear Energy

On December 2, 1942 man achieved here the first self-sustaining chain reaction and thereby initiated the controlled release of nuclear energy   Submitted by Bryan Arnold @nanowhiskers

On December 2, 1942 man achieved here the first self-sustaining chain reaction and thereby initiated the controlled release of nuclear energy   Submitted by Bryan Arnold @nanowhiskers

    Elizabeth Cary Agassiz

      Riverway Overpass

      National Industrial Recovery Act of 1934 overpass with names of political leaders and engineers

      National Industrial Recovery Act of 1934 overpass with names of political leaders and engineers

        Black Soldiers of the Continental Army

        REVOLUTIONARY SOLDIERS BLACK SOLDIERS OF THE CONTINENTAL ARMY CATO STEDMAN AND NEPTUNE FROST ARE BURIED IN THIS GROUND 1775

        REVOLUTIONARY SOLDIERS BLACK SOLDIERS OF THE CONTINENTAL ARMY CATO STEDMAN AND NEPTUNE FROST ARE BURIED IN THIS GROUND 1775

          Site of the Birthplace of Charles Bulfinch

            Suffolk Law School

            DEDICATED TO THE SERVICE OF MEN WHO MUST STUDY, IF AT ALL, BY NIGHT

            DEDICATED TO THE SERVICE OF MEN WHO MUST STUDY, IF AT ALL, BY NIGHT

              Tadeusz Kosciuszko 1746 - 1817

              TADEUSZ KOSCIUSZKO 1746 - 1817 I PREFER PEACE MORE THAN THE GREATEST RANK IN THE WORLD Submitted by MrWilsonZ

              TADEUSZ KOSCIUSZKO 1746 - 1817 I PREFER PEACE MORE THAN THE GREATEST RANK IN THE WORLD Submitted by MrWilsonZ

                The Traffic Jam

                The Traffic Jam In 1992 the American artist, Mark Bulwinkle, created the steel sculptures you see here and throughout the parking lots of The East Bay Bridge Shopping Center. To all the children...

                The Traffic Jam In 1992 the American artist, Mark Bulwinkle, created the steel sculptures you see here and throughout the parking lots of The East Bay Bridge Shopping Center. To all the...

                  Coeur d' Alene Mining District

                  Submitted by @larrycebula.

                  Submitted by @larrycebula.

                    Brooklyn Bridge National Historic Civil Engineering Landmark

                      Site of the Bowling Green 1700

                        New Croton Aqueduct

                        • croton

                        Brooklyn Bridge Reconstruction

                          Power System of Boston's Rapid Transit, 1889

                            Boston Common: America's First Subway

                              The Spiders from Mars

                              Submitted by @Bernicessities.

                              Submitted by @Bernicessities.

                              • bowie
                              • ronson
                              • bolder
                              • woody
                              • woodmansey

                              William Dean Howells

                                Brookland Ferry Landing

                                  Naval Yard Granite Wall

                                    World's First Successful Long Distance Telephone Call

                                    On this site Alexander Graham Bell, inventor of the telephone, recieved from Brantford, Ontario, on August 10, 1876, the world's first successful long distance telephone call. Erected by the...

                                    On this site Alexander Graham Bell, inventor of the telephone, recieved from Brantford, Ontario, on August 10, 1876, the world's first successful long distance telephone call. Erected by...