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

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

                        Tucson Museum of Art Western Art Patrons

                          Tucson Old Walled City

                              City of Tucson City Hall Tower