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

The Golden Fire Hydrant

  "Though the water mains were broken and dry on April 18, 1906 yet from this Greenberg hydrant on the following night there came a stream of water allowing the firemen to save the Mission...

  "Though the water mains were broken and dry on April 18, 1906 yet from this Greenberg hydrant on the following night there came a stream of water allowing the firemen to save the Mission...

  • san francisco
  • fire hydrant
  • bay area
  • fire
  • 1906
  • california

The Real Linus

The Real Linus Linus Maurer (son of Nick and Ella) was borned and raised in Sleepy Eye, Minnesota. He spnt four years in the Navy durin World War 2 and then went on tu study art at the Minneapolis...

The Real Linus Linus Maurer (son of Nick and Ella) was borned and raised in Sleepy Eye, Minnesota. He spnt four years in the Navy durin World War 2 and then went on tu study art at the...

  • linus
  • peanuts
  • schulz

Western Maryland Station

    Plaque in Gettysburg where Lincoln's train arrived Nov 1863 to deliver Gettysburg Address:   "Western Maryland StationThis is the original station wherePresident Lincoln's train arrived...

    Plaque in Gettysburg where Lincoln's train arrived Nov 1863 to deliver Gettysburg Address:   "Western Maryland StationThis is the original station wherePresident Lincoln's train...

  • lincoln
  • gettysburg
  • train

John Pool

Walked across Cape Ann from Gloucester through Dogtown & made sure to stop & #ReadThePlaque before reaching Rockport: "John Pool Here stood the first framed house in Sandy Bay (Rockport) built in...

Walked across Cape Ann from Gloucester through Dogtown & made sure to stop & #ReadThePlaque before reaching Rockport: "John Pool Here stood the first framed house in Sandy Bay (Rockport) built in...

  • rockport
  • sandy bay
  • long wharf
  • boston

Quaternion Bridge

Here as he walked by on the 16th of October 1843 Sir William Rowan Hamilton in a flash of genius discovered the fundamental formula for quaternion multiplication i² = j² = k² = ijk = −1 & cut it...

Here as he walked by on the 16th of October 1843 Sir William Rowan Hamilton in a flash of genius discovered the fundamental formula for quaternion multiplication i² = j² = k² = ijk = −1 & cut it...

  • math
  • quaternion
  • bridge
  • hamilton
  • dublin
  • ireland

Most Beautiful Steel Bridge, Class II, 1960

"American Institute of Steel ConstructionAnnual Award of MeritMost Beautiful Steel Bridge Class II   1960" Submitted by @phillydesign

"American Institute of Steel ConstructionAnnual Award of MeritMost Beautiful Steel Bridge Class II   1960" Submitted by @phillydesign

  • steel
  • bridge
  • award
  • beautiful

Mary Todd Lincoln House

"Mary Todd Lincoln House Buildin 1806 as an inn. Becamehome of politician & businessmanRobert S. Todd in 1832. Mary Todd,his daughter, born in Lexington on Dec. 13, 1818, moved to IL in...

"Mary Todd Lincoln House Buildin 1806 as an inn. Becamehome of politician & businessmanRobert S. Todd in 1832. Mary Todd,his daughter, born in Lexington on Dec. 13, 1818, moved to IL...

  • lincoln
  • todd
  • mary todd
  • mary todd lincoln

From Albany to Buffalo

Erie Canal Heritage Trail  'The Great Embankment'  Completed 1822 is one mile long, 70 feet high across Irondequoit Creek Valley  Pittsford Bicentennial 1989. Submitted by @toddnatti

Erie Canal Heritage Trail  'The Great Embankment'  Completed 1822 is one mile long, 70 feet high across Irondequoit Creek Valley  Pittsford Bicentennial 1989. Submitted by @toddnatti

  • albany
  • buffalo
  • erie
  • canal
  • embankment
  • creek

Phillip Burton Wilderness

    Point Reyes National Seashore

    Point Rayes National Seashore Dedicated by Mrs. Lyndon B Johnson To the service of the people of the United States of America US Department of the Interior National Park Service September 20, 1966 

    Point Rayes National Seashore Dedicated by Mrs. Lyndon B Johnson To the service of the people of the United States of America US Department of the Interior National Park Service September 20, 1966 

    • point reyes
    • lady bird
    • california

    The Woodland Opera House

    "The Woodland Opera House The first opera house to serve the SacramentoValley was build on this site in 1885. The presentstructure was built in 1895-1896, ontinues to representan important center...

    "The Woodland Opera House The first opera house to serve the SacramentoValley was build on this site in 1885. The presentstructure was built in 1895-1896, ontinues to representan important center...

    • woodland
    • opera
    • house

    Bear Valley Visitor Center

    Vistor Center at Point Reyes National Seashore "Bear Valley Visitor Center This visitor and interpretive center was the dream of William Field(1910 - 1978), a longtime conservationist and friend...

    Vistor Center at Point Reyes National Seashore "Bear Valley Visitor Center This visitor and interpretive center was the dream of William Field(1910 - 1978), a longtime conservationist and friend...

    • california
    • point reyes
    • seashore
    • sea
    • shore

    Aboriginal Veterans' Memorial

        "This memorial is deidcated to all Aboriginal menand women from South West Victoria who servedtheir country proudly along with fellowAustralians since World War I We say thinks to those who...

        "This memorial is deidcated to all Aboriginal menand women from South West Victoria who servedtheir country proudly along with fellowAustralians since World War I We say thinks to those who...

    • south west victoria
    • australia
    • aboriginal
    • wuwuurk

    W. Green Deschamps. Jr Highway

    W. Green Deschamps Jr. Highway

    W. Green Deschamps Jr. Highway

    • south carolina
    • highway

    Hotaling Building

    Old SF. "HOTALING BUILDING Built in 1866 and occupied by A. P. Hotaling& Co., this building housed the largest liquorrepository on the West Coast. It survived the1906 earthquake and fire due to a...

    Old SF. "HOTALING BUILDING Built in 1866 and occupied by A. P. Hotaling& Co., this building housed the largest liquorrepository on the West Coast. It survived the1906 earthquake and fire due to a...

    • san francisco
    • whisky
    • bay area
    • fire
    • 1866

    Remembering our Ohlone ancestors

    "Rememberingour Ohlone Ancestors This was their world.Then other people came& their world changede.Now our voices & footstepsjoin theirs as part of theliving history of this ancient place." Pretty...

    "Rememberingour Ohlone Ancestors This was their world.Then other people came& their world changede.Now our voices & footstepsjoin theirs as part of theliving history of this ancient place." Pretty...

    • ohlone
    • emeryville
    • bay area
    • comic sans

    New Jersey State Museum

    "Founded in 1897,the State Museum collects,preserves, interprets and exhibitsover a wide range of subjects -from fossils to fine art,Native American toolsto the finest sliver,quilts to comets...

    "Founded in 1897,the State Museum collects,preserves, interprets and exhibitsover a wide range of subjects -from fossils to fine art,Native American toolsto the finest sliver,quilts to comets...

    • trenton
    • new jersey

    Here the Motion Picture Began

    Here the Motion Picture Began:On the night of April 23, 1896, on this sitein Koster & Bial's Music HallThomas A. Edisonwith the "Vitascope"first projected a moving picture----In commemoration of...

    Here the Motion Picture Began:On the night of April 23, 1896, on this sitein Koster & Bial's Music HallThomas A. Edisonwith the "Vitascope"first projected a moving picture----In commemoration of...

    • movie
    • motion picture
    • macys
    • edison

    Independent Marine Company

    "1774 - 1974 On this site (Wolfe Tavern) in 1774 the Independent Marine Companywas formed by members of the NewburyportMarine Society under Captain James HudsonFirst militia company of seamen...

    "1774 - 1974 On this site (Wolfe Tavern) in 1774 the Independent Marine Companywas formed by members of the NewburyportMarine Society under Captain James HudsonFirst militia company of seamen...

    • marine
    • militia hudson
    • 1774
    • revolutionary war

    WW2 V1 Rocket Plaque

    WW2 plaque in Lewisham (and first I've seen by M&S!) #readtheplaque "In memory of the51 people who diedand the many injuredas a result of the V1 rocket that landed here28th July 1944" Submitted by...

    WW2 plaque in Lewisham (and first I've seen by M&S!) #readtheplaque "In memory of the51 people who diedand the many injuredas a result of the V1 rocket that landed here28th July 1944" Submitted by...

    • wwii
    • v1
    • london