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

Vlad the Impaler

Submitted by @reporterjoe.

Submitted by @reporterjoe.

    This Playing Field

    THIS PLAYING FIELD WAS DEVELOPED AS A JOINT SCHEME BETWEEN PROSPECT CITY COUNCIL AND THE EDUCATION DEPT OF S.A. FOR THE BENEFIT OF THE SCHOOL AND THE COMMUNITY OF PROSPECT OPENED FOR USE 23RD A....

    THIS PLAYING FIELD WAS DEVELOPED AS A JOINT SCHEME BETWEEN PROSPECT CITY COUNCIL AND THE EDUCATION DEPT OF S.A. FOR THE BENEFIT OF THE SCHOOL AND THE COMMUNITY OF PROSPECT OPENED FOR USE 23RD...

      In Appreciation of Sheila Dinneen Family and Neighbours

      Submitted by @SignsTheReading.

      Submitted by @SignsTheReading.

        Early Play-By-Play Radio Broadcast of a College Football Game

        Submitted by @TAMU.

        Submitted by @TAMU.

          After Milneford Mills

          Submitted by @heritagetoronto.

          Submitted by @heritagetoronto.

            Alex Haley

            Alex Haley (1921-1992) Alexander Murray Palmer Haley lived and maintained a writing studio here. Beginning in 1963 he conducted many in-depth interviews with Malcolm X for his first book, The...

            Alex Haley (1921-1992) Alexander Murray Palmer Haley lived and maintained a writing studio here. Beginning in 1963 he conducted many in-depth interviews with Malcolm X for his first book,...

              John Ericsson

              Submitted by pdxgrggles

              Submitted by pdxgrggles

                The Great Telescope

                145 years before ⁦the Hubble,⁩ this was the worlds foremost deep-sky observatory: the ‘Leviathan’ 72” telescope at ⁦ Birr Castle. It held the world record for 72 years.⁩ Submitted by @Shamrocketeer

                145 years before ⁦the Hubble,⁩ this was the worlds foremost deep-sky observatory: the ‘Leviathan’ 72” telescope at ⁦ Birr Castle. It held the world record for 72 years.⁩ Submitted by @Shamrocketeer

                  R. C. Harris

                  R. C. Harris (1875-1945) who masterminded much of the city's vital infrastructure, lived at Old City Hall from 1900 to 1909, and worked there from 1900 to 1945. Submitted by @heritagetoronto.

                  R. C. Harris (1875-1945) who masterminded much of the city's vital infrastructure, lived at Old City Hall from 1900 to 1909, and worked there from 1900 to 1945. Submitted by @heritagetoronto.

                    The Cliff Walk

                    Submitted by @bthubbard.

                    Submitted by @bthubbard.

                      Yorkville Town Hall

                      Submitted by @heritagetoronto.

                      Submitted by @heritagetoronto.

                        Old Burying Ground, Halifax

                        Submitted by @bthubbard.

                        Submitted by @bthubbard.

                          TO COMMEMORATE THE HEROISM AND SACRIFICE OF ALL COLORED SOLDIERS

                          TO COMMEMORATE THE HEROISM AND SACRIFICE OF ALL COLORED SOLDIERS WHO SERVED IN THE VARIOUS WARS ENGAGED IN BY THE UNITED STATES OF AMERICA THAT A LASTING RECORD SHALL BE MADE OF THEIR UNSELFISH...

                          TO COMMEMORATE THE HEROISM AND SACRIFICE OF ALL COLORED SOLDIERS WHO SERVED IN THE VARIOUS WARS ENGAGED IN BY THE UNITED STATES OF AMERICA THAT A LASTING RECORD SHALL BE MADE OF THEIR...

                            The Manufacture of Illuminating Gas

                            AAC TO COMMEMORATE THE INAUGURATION OF A CHEMICAL INDUSTRY IN AMERICA THE MANUFACTURE OF ILLUMINATING GAS THE FIRST FRANCHISE IN AMERICA TO PRODUCE AND DISTRIBUTE GAS FOR PUBLIC USE WAS GRANTED IN...

                            AAC TO COMMEMORATE THE INAUGURATION OF A CHEMICAL INDUSTRY IN AMERICA THE MANUFACTURE OF ILLUMINATING GAS THE FIRST FRANCHISE IN AMERICA TO PRODUCE AND DISTRIBUTE GAS FOR PUBLIC USE WAS GRANTED IN...

                              Clarence "Hank" Raimondi and John A. Raimondi

                              IN MEMORY OF CLARENCE RAIMONDI "HANK" JOHN A. RAIMONDI WHEN YOU SEE A RAINBOW YOU'LL KNOW WHO'S MIXING THE COLORS. Submitted by @DIYGene.

                              IN MEMORY OF CLARENCE RAIMONDI "HANK" JOHN A. RAIMONDI WHEN YOU SEE A RAINBOW YOU'LL KNOW WHO'S MIXING THE COLORS. Submitted by @DIYGene.

                                South Humber Park Pavilion

                                Submitted by @heritagetoronto.

                                Submitted by @heritagetoronto.

                                  John Batman

                                  Submitted by @HelenZaltzman

                                  Submitted by @HelenZaltzman

                                    Jenny Geddes

                                    In 1637, Edinburgh street-seller Jenny Geddes threw her stool at the Dean of\xc2\xa0St Giles' Cathedral in protest at the use of a new prayer book, sparking a riot which led to the Wars of the...

                                    In 1637, Edinburgh street-seller Jenny Geddes threw her stool at the Dean of\xc2\xa0St Giles' Cathedral in protest at the use of a new prayer book, sparking a riot which led to the Wars of...

                                      This Bomb

                                      Submitted by Elliott R. Plack, CC0, via Wikimedia Commons

                                      Submitted by Elliott R. Plack, CC0, via Wikimedia Commons

                                        Site of the United States Olympic Track and Field Trials

                                        CALIFORNIA STATE UNIVERSITY SACRAMENTO Site of the United States Olympic Track and Field Trials July 14 - 23, 2000

                                        CALIFORNIA STATE UNIVERSITY SACRAMENTO Site of the United States Olympic Track and Field Trials July 14 - 23, 2000