A gigantic map of all the cool plaques in the world. A project of 99% Invisible. Logo by Chop Shop

Bayard Rustin

    Site of the Old Carroll Hall

    Site of the Old Carroll Hall 1865-1904 1-The original Carroll Hall 2-In it was started St. John’s College – 1866 3-In it was started Sisters of the Poor – 1871 4-In it was started the Tabernacle ...

      Eleftherios Venizelos

      Eleftherios Venizelos 1864-1936 Liberal Politician, Statesman, Social Reformer One of the most prominent Greek and European Leaders of the 20th Century He marked the modernization of Greece with his ...

        The Daguerre Monument

        The Daguerre Monument This monument pays tribute to French artist and inventor Louis-Jacques-Mandé- Daguerre (1787-1851), who revolutionized picture- making in 1839 by introducing the first ...

          Northern Baptist Convention

          n this building on May 16-17, 1907 The Northern Baptist Convention was formed and the Hon. Charles Evans Hughes elected its first president.    From Wikipedia: Charles Evans Hughes Sr. (April ...

          • church

          Overthrust Fault

          Overthrust Fault This site is an example of an overthrust fault.   Soil Lower Cetaceous (Potomac) Sands and Gravels Precambrian Schist Normal Position Before Faulting   Soil Schist Thrust Fault Plane ...

          • geology
          • adams morgan
          • washington dc
          • walter pierce p...

          Walter Pierce Park

          Roads to Diversity Adams Morgan Heritage Trail Walter Pierce Park The Rock Creek Valley, once home to Native Americans, had attracted European settlers by 1703. Before John Quincy Adams ...

            Mathew Carey (1760-1839)

            An Irish Catholic who emigrated to Philadelphia in 1784, Carey was a prominent printer and publisher and prolific writer. He was an influential political economist and nationalist, promoting ...

            • philadelphia
            • irish
            • immigration
            • printer

            Marc Blitzstein (1905-1964)

            An influential American composer, lyricist, and translator who brought vernacular to musical theater was born here. Works include the ground- breaking The Cradle Will Rock and an adaptation of The ...

            • music
            • philadelphia

            A.M.E. Book Concern

            Here in 1836 a church related company began printing hymnals, religious materials, and works by Black authors of the period. In 1847 The Christian Recorder was published here. Bishop Benjamin Tucker ...

            • philadelphia
            • churches
            • black history

            Pennsylvania Hospital

            This is the first hospital in the U.S. Chartered by Colonial Assembly in 1751 for "relief of the sick poor." Benjamin Franklin and Dr. Thomas Bond were its chief founders. First building, erected in ...

            • philadelphia
            • hospital
            • medicine

            The German Society of Philadelphia

            The oldest German American organization in the US was founded Dec. 26, 1764, in Philadelphia to provide legal aid, welfare, and language support to German immigrants. Its library, containing one of ...

            • immigration
            • philadelphia
            • german
            • library

            Frank Furness

            A nationally influential architect, his forceful designs and bold use of industrial materials helped shape American modernism. His works include the Pa. Academy of Fine Arts and U. of Penn Library. ...

            • philadelphia
            • architecture

            Sir Christopher Wren

            Submitted by @simontillo

            • 1502
            • st. paul's cath...
            • catherine of ar...

            AIDS Library of Philadelphia

            Submitted by Eli Anders (@elioanders)

            • aids
            • lgbtq
            • philadelphia

            East Boston Greenway

            Submitted by @Ritterton

              Columbus in Galway

              ON THESE SHORES  AROUND 1477 THE  GENOESE SAILOR CRISTOFORO  COLOMBO  FOUND SURE SIGNS  OF LAND BEYOND  THE ATLANTIC Submitted by @jackwidely

              • 1477
              • columbus
              • galway

              This Shore Line of San Francisco

              THIS SHORE LINE OF SAN FRANCISCO  BAY REACHED A POINT TWENTY-FIVE  FEET NORTHEASTERLY FROM THIS SPOT  AT THE TIME GOLD WAS DISCOVERED  BY JAMES W. MARSHALL AT COLOMA,  CALIFORNIA, JANUARY 24, ...

                Fenway Park

                Submitted by @Ritterton

                  To The Men of Trinity Who Gave Their Lives For Freedom and Humanity

                  Submitted by @Ritterton

                    George Lincoln Richardson

                    Submitted by @Ritterton

                    • verdun
                    • machine gun
                    • wwi
                    • infantry
                    • richardson

                    Bristol Stock Exchange

                    THIS TABLET WAS PLACED HERE BY THE  MEMBERS OF THE BRISTOL STOCK EXCHANGE  TO RECORD  THE GIFT OF THIS BUILDING  TO THE EXCHANGE  BY THEIR PRESIDENT GEORGE WHITE  AUGUST 1903  Submitted ...

                      The Beginning of the Grand Army of the Republic

                      Submitted by @Ritterton

                        Congressional Medal of Honor, WWI

                        Submitted by @Ritterton

                          WWI Chaplains

                          WHERE SHELLS BURST AND MEN FELL BROKEN AND BLEEDING THEY CALMLY ADMINISTERED HEROIC WITNESS TO THE POWER OF THE FAITH THEY PREACHED ERECTED BY THE COMMONWEALTH TO COMMEMORATE THE SERVICE OF ...