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

Osceola Mills

OSCEOLA MILLS The first town in the county to receive a railroad in 1862 and the telephone in 1878. In 1874 Berwind-White, the 4th largest coal company in the world, was founded here. The 1875...

OSCEOLA MILLS The first town in the county to receive a railroad in 1862 and the telephone in 1878. In 1874 Berwind-White, the 4th largest coal company in the world, was founded here. The...

  • osceola mills
  • pennsylvania
  • clearfield county
  • railroad
  • telephone
  • coal
  • horace liveright
  • lakes to the...

Building a Dome

Building a Dome The dome-shaped rock that holds Vulcan's Eyeresembles what Lassen Peak—a plug dome volcano—once looked like. Layers of lava from older volcanoes built the mountain to a level near...

Building a Dome The dome-shaped rock that holds Vulcan's Eyeresembles what Lassen Peak—a plug dome volcano—once looked like. Layers of lava from older volcanoes built the mountain to a level...

  • lassen
  • volcano

Navajo Springs

AT NAVAJO SPRINGS DECEMBER 29. 1863 ARIZONA'S TERRITORIAL OFFICIALS TOOK THE OATH OF OFFICE DURING A SNOWSTORM GOVERNOR JOHN N GOODWIN AND OTHER OFFICIALS ARRIVING FROM THE EAST BY WAGON TRAIN...

AT NAVAJO SPRINGS DECEMBER 29. 1863 ARIZONA'S TERRITORIAL OFFICIALS TOOK THE OATH OF OFFICE DURING A SNOWSTORM GOVERNOR JOHN N GOODWIN AND OTHER OFFICIALS ARRIVING FROM THE EAST BY WAGON TRAIN...

    Northern Terminus of the Alcan

    NORTHERN TERMINUS OF THE “ALCAN” MILITARY HIGHWAY TO ALASKA THIS HIGHWAY WAS CONSTRUCTED DURING WORLD WAR 2 AS A MILITARY SUPPLY ROUTE TO SUPPLY INTERIOR ALASKA MILITARY INSTALLATIONS AND...

    NORTHERN TERMINUS OF THE “ALCAN” MILITARY HIGHWAY TO ALASKA THIS HIGHWAY WAS CONSTRUCTED DURING WORLD WAR 2 AS A MILITARY SUPPLY ROUTE TO SUPPLY INTERIOR ALASKA MILITARY INSTALLATIONS...

    • alcan
    • alaska
    • wwii

    Rossi Retort

    The Rossi Retort This two-tube inclined retort, known as a “Rossi Retort,” was named after Louis Rossi who came to New Almaden in the 1920s and built a reduction plant based on his patented...

    The Rossi Retort This two-tube inclined retort, known as a “Rossi Retort,” was named after Louis Rossi who came to New Almaden in the 1920s and built a reduction plant based on his...

      San Andreas Fault - Split Plaque

      [Rear plaque] THE SAN ANDREAS FAULT This rift extends from El Centro on the south, 650 miles northwesterly the length of California to Point Arenas, where it continues seaward. The most publicized...

      [Rear plaque] THE SAN ANDREAS FAULT This rift extends from El Centro on the south, 650 miles northwesterly the length of California to Point Arenas, where it continues seaward. The most publicized...

      • parkfield
      • san andreas fault

      Saturn V Rocket

      NATIONAL HISTORIC MECHANICAL ENGINEERING LANDMARK SATURN V ROCKET 1967 - 1973 THE LARGEST ROCKET BUILT AT THE TIME OF THE HISTORIC FIRST MISSIONS TO THE MOON, THE SATURN V CARRIED ALOFT THE 45-TON...

      NATIONAL HISTORIC MECHANICAL ENGINEERING LANDMARK SATURN V ROCKET 1967 - 1973 THE LARGEST ROCKET BUILT AT THE TIME OF THE HISTORIC FIRST MISSIONS TO THE MOON, THE SATURN V CARRIED ALOFT THE...

      • saturn v
      • rocket
      • nasa
      • apollo
      • moon landing

      Steamboat Jenny Lind Disaster

      THI STEAMBOAT JENNY LIND DISASTER Beginning in the 1840s, the dock at Alviso served at Santa Clara County’s access to the San Francisco Bay. From this port, passengers Boarded steamboats loaded...

      THI STEAMBOAT JENNY LIND DISASTER Beginning in the 1840s, the dock at Alviso served at Santa Clara County’s access to the San Francisco Bay. From this port, passengers Boarded steamboats...

      • jenny lind
      • alviso
      • steamboat

      Tamsen and Elizabeth Donner

      Tamsen and Elizabeth Donner They gave unselfishly, their fortunes and their lives that their children should survive Near this site, in the winter of 1846, two pioneer women gave up their lives...

      Tamsen and Elizabeth Donner They gave unselfishly, their fortunes and their lives that their children should survive Near this site, in the winter of 1846, two pioneer women gave up their lives...

      • donner party

      Dick & Doris Hickner

      Presented in Honor of Dick & Doris Hickner with deep appreciation for their 15 years of undaunting leadership to the Texas mid coast wildlife refuges; and for serving as founder & charter...

      Presented in Honor of Dick & Doris Hickner with deep appreciation for their 15 years of undaunting leadership to the Texas mid coast wildlife refuges; and for serving as founder &...

        See the Good—Emily Benatar

        “See the good” This deck is dedicated to Emily Benatar, Class of 2011 Designed by Gracie Cain, Emily’s best friend at Paly The story behind the design Emily had just turned 5. She was holding her...

        “See the good” This deck is dedicated to Emily Benatar, Class of 2011 Designed by Gracie Cain, Emily’s best friend at Paly The story behind the design Emily had just turned 5. She was holding her...

          James Johnston House

          THE JAMES JOHNSTON HOUSE James Johnston, a forty-niner from Ohio, established a homestead on this wild, romantic vista of sloping fields and ocean shore in 1853. For his Californiano bride, Petra...

          THE JAMES JOHNSTON HOUSE James Johnston, a forty- niner from Ohio, established a homestead on this wild, romantic vista of sloping fields and ocean shore in 1853. For his Californiano bride,...

          • johnston house
          • half moon bay
          • white house

          Coyote Lake~Harvey Bear Ranch County Park

          COYOTE LAKE~HARVEY BEAR RANCH COUNTY PARK In the 1830s, most of what is now the park was located on the Rancho San Francisco de las Llagas granted to Carlos Castro. The reservoir is found on early...

          COYOTE LAKE~HARVEY BEAR RANCH COUNTY PARK In the 1830s, most of what is now the park was located on the Rancho San Francisco de las Llagas granted to Carlos Castro. The reservoir is found on...

            Early Depot Site

              DEA Special Agent Michael G. Garbo

                Railroad Impacts

                  Wyatt Earp Shot Frank Stilwell...

                    Locomotive 1673

                      Casa De Hiram S. Stevens

                        Hiram S. Stevens House