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

First Bridge Across the Mississippi

THIS BOULDER MARKS THE SITE OF THE WESTERN ABUTMENT OF THE FIRST BRIDGE ACROSS THE MISSISSIPPI RIVER, BUILT IN 1853-1855   ERECTED BY HANNAH GALDWELL CHAPTER, DAUGHTERS OF THE AMERICAN REVOLUTION...

THIS BOULDER MARKS THE SITE OF THE WESTERN ABUTMENT OF THE FIRST BRIDGE ACROSS THE MISSISSIPPI RIVER, BUILT IN 1853-1855   ERECTED BY HANNAH GALDWELL CHAPTER, DAUGHTERS OF THE AMERICAN REVOLUTION...

    Chippiannock Cemetery

    Chippiannock Cemetery was placed on the National Register of Historic Places on May 6, 1994 for significance in Landscape Architecture, Architecture, and Art.  Designed by noted Landscape Engineer...

    Chippiannock Cemetery was placed on the National Register of Historic Places on May 6, 1994 for significance in Landscape Architecture, Architecture, and Art.  Designed by noted Landscape Engineer...

      Boatyard Archaeology

      Boatyard Archaeology   This spot marks the location of the Dubuque Boat and Boiler Works storage sheds used for pipe, paint and rivets.   An open shed for hot iron rolls was next door.  Originally...

      Boatyard Archaeology   This spot marks the location of the Dubuque Boat and Boiler Works storage sheds used for pipe, paint and rivets.   An open shed for hot iron rolls was next door.  Originally...

        USS Michigan

        U.S.S. Michigan   An 1818 Treaty allows the United States and Canada to each maintain one warship of limited armament on the Great Lakes.  For most of a century the U.S.S. MICHIGAN served as the...

        U.S.S. Michigan   An 1818 Treaty allows the United States and Canada to each maintain one warship of limited armament on the Great Lakes.  For most of a century the U.S.S. MICHIGAN served as the...

          Manistee Library

          MANISTEE CITY LIBRARY   In 1885 a group of Manistee ladies formed the Lakeside Club, whose primary goal was to create a library.  In 1902 the club joined forces with the local literacy society and...

          MANISTEE CITY LIBRARY   In 1885 a group of Manistee ladies formed the Lakeside Club, whose primary goal was to create a library.  In 1902 the club joined forces with the local literacy society and...

            Damage Repaired

            DAMAGE REPAIRED AND REDEDICATED JULY 4, 1989   THIS PROPERTY IS LISTED IN THE NATIONAL REGISTER OF HISTORIC PLACES THE SCOTT COUNTY HISTORIC PRESERVATION SOCIETY, INC.   Submitted by Bryan Arnold...

            DAMAGE REPAIRED AND REDEDICATED JULY 4, 1989   THIS PROPERTY IS LISTED IN THE NATIONAL REGISTER OF HISTORIC PLACES THE SCOTT COUNTY HISTORIC PRESERVATION SOCIETY, INC.   Submitted by Bryan Arnold...

              Field of Dreams Movie Site

              Original Field of Dreams Movie Site   Submitted by Bryan Arnold @nanowhiskers  

              Original Field of Dreams Movie Site   Submitted by Bryan Arnold @nanowhiskers

                Day's Bridge Summit

                [Location approximate]

                [Location approximate]

                • washington
                • george washington
                • revolutionary war
                • 1780

                Mt. Washington

                THE HIGHEST WIND EVERY OBSERVED BY MAN WAS RECORDED HERE  FROM 1932 TO 1937 THE MT. WASHINGTON OBSERVATORY WAS OPERATED IN THE SUMMIT STAGE OFFICE THEN OCCUPYING THIS SITE. IN A GREAT STORM APRIL...

                THE HIGHEST WIND EVERY OBSERVED BY MAN WAS RECORDED HERE  FROM 1932 TO 1937 THE MT. WASHINGTON OBSERVATORY WAS OPERATED IN THE SUMMIT STAGE OFFICE THEN OCCUPYING THIS SITE. IN A GREAT STORM APRIL...

                • new hampshire
                • white mountain
                • windy
                • 1934

                First Honeybees in California

                First Honeybees in California Here, on the 1,939-acre Rancho Potrero de Santa Clara, Christopher A. Shelton in early March 1853 in-troduced the honeybee to California. In Aspinwall, Panama,...

                First Honeybees in California Here, on the 1,939-acre Rancho Potrero de Santa Clara, Christopher A. Shelton in early March 1853 in- troduced the honeybee to California. In Aspinwall, Panama,...

                • san jose
                • california
                • honeybees
                • bongo
                • beekeeping
                • bees
                • arbuckle

                Barry Residence

                Circa 1832, Thomas L. Moody built a double-log cabin on this land. In 1899 Squire John Lafayette Coopwood, a planter, and his wife, Amoranda Louetta, purchased the property. In 1924, the couple's...

                Circa 1832, Thomas L. Moody built a double-log cabin on this land. In 1899 Squire John Lafayette Coopwood, a planter, and his wife, Amoranda Louetta, purchased the property. In 1924, the couple's...

                • shelby county
                • tennessee

                Isaac Hayes

                In the 1970s Hayes was a multiple gold and platinum-selling recording star. His recording of "Shaft" won an Oscar, Golden Globe, and three Grammy awards. He wrote or co-wrote over 200 songs for...

                In the 1970s Hayes was a multiple gold and platinum-selling recording star. His recording of "Shaft" won an Oscar, Golden Globe, and three Grammy awards. He wrote or co-wrote over 200 songs for...

                • shelby county
                • tennessee

                The Old Hobart Town Gaol

                From instagramSubmitted by @littlebobbyplaqueson

                From instagramSubmitted by @littlebobbyplaqueson

                  Lewis & Clark Trail

                  • lewis and clark
                  • oregon

                  Contoocook Railroad Bridge and Depot

                  Contoocook Railroad Bridge and DepotBuilt in 1889 on the granite abutments of an older span, this is the world's oldestsurviving covered railroad bridge. It was probably designed by Boston &...

                  Contoocook Railroad Bridge and DepotBuilt in 1889 on the granite abutments of an older span, this is the world's oldestsurviving covered railroad bridge. It was probably designed by Boston...

                  • contoocook
                  • railroad bridge
                  • depot
                  • new hampshire

                  Nanton Air Museum

                  NANTON AIR MUSEUM  Dedicated to the men and women who served the Allied Air Forces in so many ways during World War II. "An example of duty nobly done." -- Winston S. Churchill PER ARDUA AD ASTRA...

                  NANTON AIR MUSEUM  Dedicated to the men and women who served the Allied Air Forces in so many ways during World War II. "An example of duty nobly done." -- Winston S. Churchill PER ARDUA AD ASTRA...

                  • nanton
                  • wwii
                  • air forces
                  • churchill

                  Harney Peak Lookout

                  HARNEY PEAK LOOKOUT THE HARNEY PEAK FIRE LOOKOUT, DAM AND PUMPHOUSE WERE BUILT BY THE CCC IN 1939 AND ARE LISTED IN THE NATIONAL REGISTER OF HISTORIC PLACES. HARNEY PEAK ELEVATION IS 2207 METERS...

                  HARNEY PEAK LOOKOUT THE HARNEY PEAK FIRE LOOKOUT, DAM AND PUMPHOUSE WERE BUILT BY THE CCC IN 1939 AND ARE LISTED IN THE NATIONAL REGISTER OF HISTORIC PLACES. HARNEY PEAK ELEVATION IS 2207 METERS...

                  • harney
                  • pumphouse
                  • dam
                  • lookout
                  • south dakota
                  • ccc
                  • 1939

                  Crowsnest Pass / Frank Slide / Bellevue Mine Explosion / Hillcrest Mine Disaster

                  Submitted by @robertdall

                  Submitted by @robertdall

                    Clark Memorial Bench

                    Clark Memorial Bench Donated to the city of Alameda in 1920 by Park Avenue resident Isabella Derby Clark, this concrete bench was designed by Myrtle Maillot. Mrs. Clark was a proponent of animal...

                    Clark Memorial Bench Donated to the city of Alameda in 1920 by Park Avenue resident Isabella Derby Clark, this concrete bench was designed by Myrtle Maillot. Mrs. Clark was a proponent of animal...

                    • alameda
                    • bench
                    • animals
                    • jim morrison

                    Evermay

                    “Evermay” Samuel Davidson, a Scot of original character, purchased the site and built Evermay 1792-1794 with proceeds of the sale of lands he owned which include part of the present site of the...

                    “Evermay” Samuel Davidson, a Scot of original character, purchased the site and built Evermay 1792-1794 with proceeds of the sale of lands he owned which include part of the present site of the...

                    • colonial america
                    • georgetown
                    • home
                    • washington
                    • dc