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

The Slinky Toy

This historic marker memorializes the first manufacturing site of the Slinky, one of the top selling toys of the 20th Century, in Clifton Heights, Pennsylvania. Slinky was invented by mechanical...

This historic marker memorializes the first manufacturing site of the Slinky, one of the top selling toys of the 20th Century, in Clifton Heights, Pennsylvania. Slinky was invented by mechanical...

  • pennsylvania
  • delaware county
  • slinky
  • toys

Friends of Noosa

Friends of Noosa  This plaque records the incredible role played by Friends of  Noosa in the re-establishment Noosa's Council.  Friends of Noosa was a community organisation formed in  2007 to...

Friends of Noosa  This plaque records the incredible role played by Friends of  Noosa in the re-establishment Noosa's Council.  Friends of Noosa was a community organisation formed in  2007 to...

  • government
  • australia
  • noosa

Polyhedron with 432 Symmetry

The polyhedron in the fountain is a snub cube, an Archimedean semi-regular solid derived from a cube, with all its edges of equal length. This shape was chosen for the central fountain in the...

The polyhedron in the fountain is a snub cube, an Archimedean semi-regular solid derived from a cube, with all its edges of equal length. This shape was chosen for the central fountain in...

  • cal tech
  • science

Juana Maria

Indian woman abandoned on San Nicolas Island eighteen years. Found and brought to Santa Barbara by Capt. George Nidever in 1853. Note: Juana Maria died soon after being exposed to diseases on the...

Indian woman abandoned on San Nicolas Island eighteen years. Found and brought to Santa Barbara by Capt. George Nidever in 1853. Note: Juana Maria died soon after being exposed to diseases on...

  • native americans
  • channel islands
  • santa barbar...
  • island of th...

Wilke Farmhouse

  • 1898
  • queen anne

Marsha Jean Corprew

MARSHA JEAN CORPREW  1948-2000  MARSHA J. CORPREW, AN AFRICAN -  AMERICAN WOMAN, WAS APPOINTED  BY MAYOR LIONEL J. WILSON TO THE  PARKS AND RECREATION ADVISORY  COMMISSION IN 1977. SHE GAVE 22 ...

MARSHA JEAN CORPREW  1948-2000  MARSHA J. CORPREW, AN AFRICAN -  AMERICAN WOMAN, WAS APPOINTED  BY MAYOR LIONEL J. WILSON TO THE  PARKS AND RECREATION ADVISORY  COMMISSION IN 1977. SHE GAVE 22 ...

    Lakeside Park Garden Center

      Press Building

      PRESS BUILDING  The Press Building opened as the Pantages Theatre on  August 5, 1912. Retail and office uses enveloped the  building, with ground-floor tenants including a candy  store, dry...

      PRESS BUILDING  The Press Building opened as the Pantages Theatre on  August 5, 1912. Retail and office uses enveloped the  building, with ground- floor tenants including a candy  store,...

      • hippodrome
      • oakland
      • vaudeville

      The Cascades

      On November 5, 1913, 40,000 people gathered here to witness the dedication of the Los Angeles - Owens River Aqueduct. The terminus of a 233-mile long engineering marvel, the Cascades were the site...

      On November 5, 1913, 40,000 people gathered here to witness the dedication of the Los Angeles - Owens River Aqueduct. The terminus of a 233-mile long engineering marvel, the Cascades were the site...

      • natural resources
      • los angeles
      • aqueduct

      Sylmar Earthquake

      This tablet presented February 9, 1979, to the Veterans Memorial Park, in loving memory of the many veterans, nurses, and aides of the San Fernando Valley Veterans Hospital, whose lives were lost...

      This tablet presented February 9, 1979, to the Veterans Memorial Park, in loving memory of the many veterans, nurses, and aides of the San Fernando Valley Veterans Hospital, whose lives were lost...

      • disasters
      • veterans
      • earthquake
      • memorial
      • san fernando
      • los angeles

      Rogerio Rocha

      Rogerio Rocha was born in 1801, in the village of Mapanga, and was baptized in the San Fernando Mission. Rocha became a well-known blacksmith in California. In Rocha's early years he became the...

      Rogerio Rocha was born in 1801, in the village of Mapanga, and was baptized in the San Fernando Mission. Rocha became a well-known blacksmith in California. In Rocha's early years he became...

      • native americans

      Grand Central Air Terminal

      Grand Central Air Terminal is an intact example of an early airport passenger terminal and serves as a physical record of pivotal events that helped shape the development of air travel and the...

      Grand Central Air Terminal is an intact example of an early airport passenger terminal and serves as a physical record of pivotal events that helped shape the development of air travel and...

      • aviation
      • commerce
      • transportation
      • architecture
      • entertainment
      • free tours

      Hang Gliding

      On this site, May 23, 1971, with a gathering of enthusiasts for personal human flight, began the worldwide sport of Hang Gliding. (In 1971 a dozen Hang Glider pilots gathered here to fly and...

      On this site, May 23, 1971, with a gathering of enthusiasts for personal human flight, began the worldwide sport of Hang Gliding. (In 1971 a dozen Hang Glider pilots gathered here to fly...

      • flying
      • sports
      • adventure
      • aviation

      Modern Times

      End of an Era —  Charlie Chaplin’s “Modern Times”.  Near where you are now standing, silent film comic Charlie Chaplin, with Paulette Goddard at his side, appeared in the final scene of the epic...

      End of an Era —  Charlie Chaplin’s “Modern Times”.  Near where you are now standing, silent film comic Charlie Chaplin, with Paulette Goddard at his side, appeared in the final scene of the epic...

      • entertainment
      • movies
      • hollywood

      Sylmar Tunnel Disaster

      “Honoring The Lives”. On June 24, 1971, an explosion and fire took the lives of seventeen construction workers building a tunnel in Sylmar, California. The tunnel was being built for the...

      “Honoring The Lives”. On June 24, 1971, an explosion and fire took the lives of seventeen construction workers building a tunnel in Sylmar, California. The tunnel was being built for...

      • disaster
      • aqueduct
      • construction
      • sylmar earthquake
      • memorial

      Star House

      The Star dance hall and brothel, early 1900sStar House Circa 1902Bootlegged booze, loose women, hot music and rowdy customers- One of Ketchikan's oldest buildings and the Territory of Alaska's...

      The Star dance hall and brothel, early 1900sStar House Circa 1902Bootlegged booze, loose women, hot music and rowdy customers- One of Ketchikan's oldest buildings and the Territory of...

      • star house
      • ketchikan
      • creek street
      • alaska
      • prohibition
      • national reg...
      • 1902
      • brothel

      Moss Fujii

      • buddy bench
      • 1965
      • 6th grade

      The Raven Totem Pole

      The Raven Totem PoleThis pole was carved by Thomas Ukas in the middle 1960s. Mr. Ukas' father was William Ukas, also a noted and respected carver. William Ukas' works include the original Kiks.adi...

      The Raven Totem PoleThis pole was carved by Thomas Ukas in the middle 1960s. Mr. Ukas' father was William Ukas, also a noted and respected carver. William Ukas' works include the original...

      • wrangell
      • totem
      • 1960s
      • alaska
      • thomas ukas
      • post office
      • native

      The History Of Commercial Fishing In Wrangell, Alaska

      The History Of Commercial Fishing In Wrangell, Alaska. The waters of Southeast Alaska have been fished by native inhabitants for many generations. The catch has been used for bartering and as a...

      The History Of Commercial Fishing In Wrangell, Alaska. The waters of Southeast Alaska have been fished by native inhabitants for many generations. The catch has been used for bartering and as...

      • wrangell
      • alaska
      • fishing
      • salmon
      • herring
      • crab
      • ira merill
      • brenda schwartz
      • rod brown
      • university o...
      • school of fi...
      • cannery
      • hand troller
      • purse seiner
      • power troller
      • gillnetter
      • longliner
      • crabber
      • beam trawler
      • 1990

      Tongass National Forest

      Tongass National ForestFacts:- Designated by Theodore Roosevelt in 1907, the Tongass National Forest is over 100 years old.- At 16.9 Million acres, the largest national forest in the United...

      Tongass National ForestFacts:- Designated by Theodore Roosevelt in 1907, the Tongass National Forest is over 100 years old.- At 16.9 Million acres, the largest national forest in the...

      • tongass nati...
      • wrangell
      • alaska
      • roosevelt
      • 1907
      • rainforest