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

This is the site where James Harrison invented the worlds first ice making machine at Rocky Point Geelong 1854

This is the site where James Harrison invented the worlds first ice making machine at Rocky Point Geelong 1854.

  • refrigeration
  • geelong
  • 1854
  • james harrison

Bristol-Myers founded here

World Famous BRISTOL-MYERS COMPANY Was founded as CLINTON PHARMACEUTICAL COMPANY by Mr. William M. Bristol And Mr. John R. Myers On the second floor Of this building in 1887 Clinton...

  • clinton
  • bristol myers
  • bristol myers squibb

Mauch Chunk Patriotism

Mauch Chunk, PA is arguably where the roller coaster was invented, in the form of the “Mauch Chunk Scenic Railway” which was in fact a repurposed coal train. In 1954 two cross-river boroughs...

  • mauch chunk
  • pennsylvania
  • coaltown
  • jim thorpe

Old Man of the Mountain Profiler Plaza

Plaque is dedicated to a landmark natural feature which crumbled in 2003. At the Profiler Plaza onlookers can align metal facsimiles with the mountain view to simulate the Old Man’s appearance....

  • old man of t...
  • new hampshire
  • franconia notch

Tangier Island History

Plaque seen on Tangier Island, a vanishing place in the Chesapeake Bay. Tangier is notable for a distinctive dialect and an absence of cars. Q 7A TANGIER ISLAND The island was visited in 1608...

  • tangier
  • chesapeake
  • climate refugee
  • bay
  • island
  • chesapeake island

Birthplace of Silicon Valley (HP Garage)

    Uncle Sam Plaza

    Near this spot stood the birthplace of Samuel "Uncle Sam" Wilson (1766-1854) Patriot. Participant in 1775. His Troy packing plant fed the soldiers of 1813. His popular nickname, associated with...

    • arlington ma
    • revolutionary war

    Ocean Shore Railroad and Granada

    Ocean Shore R.R. and Granada The whistle of the first Ocean Shore Railroad passenger train from San Francisco to Granada echoed off nearby hills on June 10th, 1908. There were 300 San Franciscans,...

    • oceanshorerailroad
    • history
    • railroad
    • elgranada

    Dominguez-Escalante Expedition

    DOMINGUEZ-ESCALANTE EXPEDITION On August 10, 1776, there passed by here the expedition of Fathers Francisco Atanasio Dominquez and Silvestre Velez de Escalante with eight companions. They...

      Matt Mulliean, Untitled

      Matt Mulliean Untitled, 1989 Etched granite Overall dimensions 68 feet by 8 feet The images of this monumental mural chronicle the history of the site bounded by 19th and 50th streets and...

      • new york
      • manhattan
      • art
      • mta
      • subway
      • midtown
      • hell's kitchen
      • mural
      • 1989

      Juan Alonso Community Garden & Parks

      Hell's Kitchen JUAN ALONSO COMMUNITY GARDEN & PARKS JUAN ALONSO COMMUNITY GARDEN is dedicated to the memory of Juan Alonso, a long time resident and devoted community gardener, who spent countless...

      • new york
      • manhattan
      • hell's kitchen
      • juan alonso
      • 1993
      • 2000

      Around This Mount

      Around This Mount 145 St 141 St Submitted by @lampbane

      • new york
      • manhattan
      • east harlem
      • hamilton heights
      • mountain

      Masonic Hall

      MASONIC HALL On this location stood the original Masonic Hall that was home to the Grand Lodge of New York. Built in 1875 by the Trustees of the Masonic Hall and Asylum Fund.

      • new york
      • manhattan
      • masons
      • 1875

      Science, Industry and Business Library

      The New York Public Library gratefully acknowledges the generosity of Lewis B. & Dorothy Cullman Catherine & Donald B. Marron in honor of Timothy S. Healy Harold W. McGraw, Jr. Felix & Elizabeth...

      • new york
      • manhattan
      • midtown
      • nypl
      • library
      • sibl
      • 1996

      Thomas Yoseloff

      Thomas Yoseloff Thomas Yoseloff (1913-2007) was a noted publisher, author, journalist, and scholar. Born in lowa, he came to New York City in 1935 to seek his fortune and began a nearly 70-year...

      • new york
      • manhattan
      • midtown
      • snfl
      • thomas yoseloff
      • 1913
      • 2007