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

Southern Pacific Railroad Yards

Located between Atlantic and Thayer Sts., established in 1853, the S.P.R.R. Yards extended back 22 blocks, at its peak employed 4,000 men. Trains would board a ferry to cross the river and...

Located between Atlantic and Thayer Sts., established in 1853, the S.P.R.R. Yards extended back 22 blocks, at its peak employed 4,000 men. Trains would board a ferry to cross the river...

  • louisiana

U.S. Navy Model 1845 32-pounder Gun

Confederate River Batteries Nos. 5 and 10 each had one 32-pounder gun. These guns had smooth bores, were not rifled, and could fire a solid shot and explosive shell cannon balls. This solid shot...

Confederate River Batteries Nos. 5 and 10 each had one 32-pounder gun. These guns had smooth bores, were not rifled, and could fire a solid shot and explosive shell cannon balls. This solid shot...

  • louisiana
  • civil war

College Point Pharmacy

College Point Pharmacy Convent, Louisiana Established in the late nineteenth century, the pharmacy was relocated to this building in 1934, constructed by Louis Aristeé Poché Pharmacist and then...

College Point Pharmacy Convent, Louisiana Established in the late nineteenth century, the pharmacy was relocated to this building in 1934, constructed by Louis Aristeé Poché Pharmacist and then...

  • louisiana
  • commerce

Bald Cypress

Louisiana State Tree. Some are believed to have lives 800-1200 years. The height could be 130' to 150'. Lutcher, LA was a bustling town with a huge sawmill in the 20's.

Louisiana State Tree. Some are believed to have lives 800-1200 years. The height could be 130' to 150'. Lutcher, LA was a bustling town with a huge sawmill in the 20's.

  • louisiana
  • nature

U.S.Navy Model 1816 42-pounder Guns

The Confederates had three 42-pounder guns. There was one gun each in River Batteries Nos. 2, 3 and 5. These guns remained on the river front for the duration of the siege. This solid shot is 6.6...

The Confederates had three 42-pounder guns. There was one gun each in River Batteries Nos. 2, 3 and 5. These guns remained on the river front for the duration of the siege. This solid shot is...

  • louisiana
  • civil war

California State Railroad Museum

    William E. Moore Historic City Hall

      Jeremiah Cronin Jr. House / John Bellairs

      This picturesque residence was erected in 1872 for Marshall merchant Jeremiah Cronin Jr. and his wife, Susan. Local contractor Frederick N. Church constructed this house, as well as Cronin’s 1869...

      This picturesque residence was erected in 1872 for Marshall merchant Jeremiah Cronin Jr. and his wife, Susan. Local contractor Frederick N. Church constructed this house, as well as Cronin’s...

      • michigan
      • michigan his...

      Site of 21-Mile House

        Brady Family Aquatics Building

          Old Davis High School

            Davis Subway

            Davis Subway Built in 1917-18, this entrance to Davis is among the oldest sur- viving examples of I-beam con- struction on a railroad grade separation. The underpass was part of the Lincoln...

            Davis Subway Built in 1917-18, this entrance to Davis is among the oldest sur- viving examples of I-beam con- struction on a railroad grade separation. The underpass was part of the...

              Or Wooden Ship

                Royston Factory Mill

                Henry Merrell built the Royston Factory Mill, Arkansas first textile factory, 3 miles north of Murfreesboro in 1856. The complex also held saw, grist and flour mills. After the Civil War began,...

                Henry Merrell built the Royston Factory Mill, Arkansas first textile factory, 3 miles north of Murfreesboro in 1856. The complex also held saw, grist and flour mills. After the Civil War...

                • arkansas

                Henry Merrell

                Henry Merrell, known as the "Industrial Missionary to the South," was born in Utica, N.Y., in 1816. He moved to Arkansas in 1856 and built an industrial complex in Pike Co. He helped draft an...

                Henry Merrell, known as the "Industrial Missionary to the South," was born in Utica, N.Y., in 1816. He moved to Arkansas in 1856 and built an industrial complex in Pike Co. He helped draft...

                • arkansas

                Korematsu

                I biked up to Mt View Cemetery this morning to wish Oakland hero #FredKorematsu a happy 100th birthday, then made a donation to the #KorematsuInstitute to continue his legacy of social justice &...

                I biked up to Mt View Cemetery this morning to wish Oakland hero #FredKorematsu a happy 100th birthday, then made a donation to the #KorematsuInstitute to continue his legacy of social justice &...

                  The Toronto Recursive History Project

                  THE TORONTO RECURSIVE HISTORY PROJECT OF TORONTO'S RECURSIVE HISTORY This plaque was commemorated on October 10, 2018, commemorate its own commemoration. Plaques like this one are an integral part...

                  THE TORONTO RECURSIVE HISTORY PROJECT OF TORONTO'S RECURSIVE HISTORY This plaque was commemorated on October 10, 2018, commemorate its own commemoration. Plaques like this one are an integral part...

                  • plaque
                  • recursive
                  • recursive hi...

                  Nelson Algren

                  Nelson Algren lived here Submitted by @robertloerzel

                  Nelson Algren lived here Submitted by @robertloerzel

                    Melving "Guardrail" Masters

                    Submitted by @transgeekmovie

                    Submitted by @transgeekmovie

                      Point Shirley

                      Once known as Pullen Poynte, the Point contains a considerable part of the history of the north side of #BostonHarbor. The first Governor Massachusetts Bay Colony, Gov. #JohnWinthrop had become...

                      Once known as Pullen Poynte, the Point contains a considerable part of the history of the north side of #BostonHarbor. The first Governor Massachusetts Bay Colony, Gov. #JohnWinthrop had become...