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

Field of Hope

Marie Curie Cancer Care Field of Hope Sponsored by the Arundel House Hotel Planted by Cambridge City Council November 1995   Submitted by @Geograph_Bob      © Copyright Bob Harvey and licensed...

Marie Curie Cancer Care Field of Hope Sponsored by the Arundel House Hotel Planted by Cambridge City Council November 1995   Submitted by @Geograph_Bob      © Copyright Bob Harvey and...

  • marie curie
  • cancer
  • hope
  • field

A City of Women

1770-1870 A City of Women Monterey's Women of all nationalities gathered and while doing wash provided a medium for information through the "Wash Tub Mail" at Washer Woman's Gulch. It was...

1770-1870 A City of Women Monterey's Women of all nationalities gathered and while doing wash provided a medium for information through the "Wash Tub Mail" at Washer Woman's Gulch. It...

  • monterey
  • california
  • women
  • washing
  • gold fields

Golden Gate Bridge

Submitted by @Ritterton

Submitted by @Ritterton

  • san francisco
  • 3-d
  • bridge
  • golden gate

I-880 Cypress 'F' Picnic Area

I-880 CYPRESS 'F' PICNIC AREA AT ERNIE RAIMONDI PARK  A GIFT OF AND CONSTRUCTED BY THE PARTNERING TEAM OF KIEWIT/KAISER AND CALTRANS FOR THE WEST OAKLAND COMMUNITY  DEDICATED THIS 26TH DAY OF...

I-880 CYPRESS 'F' PICNIC AREA AT ERNIE RAIMONDI PARK  A GIFT OF AND CONSTRUCTED BY THE PARTNERING TEAM OF KIEWIT/KAISER AND CALTRANS FOR THE WEST OAKLAND COMMUNITY  DEDICATED THIS 26TH DAY...

  • 880
  • kaiser
  • a.d.
  • park
  • golf

Liberty Hall

LIBERTY HALL Built in 1877, Liberty Hall embodies the many layers of West Oakland history. It is an outstanding example of mid-Victorian commercial architecture, with octagonal turrets, ornamental...

LIBERTY HALL Built in 1877, Liberty Hall embodies the many layers of West Oakland history. It is an outstanding example of mid-Victorian commercial architecture, with octagonal turrets,...

  • oakland
  • bay area
  • california
  • liberty hal

Frank Furness (1839-1912)

Frank Furness (1839-1912) A nationally influential architect, his forceful designs and bold use of industrial materials helped shape American modernism. His works include the Pa. Academy of Fine...

Frank Furness (1839-1912) A nationally influential architect, his forceful designs and bold use of industrial materials helped shape American modernism. His works include the Pa. Academy of Fine...

  • philadelphia
  • architecture

James A. Garfield Death Site

I have a minor obsession with the assassinated President James A. Garfield. What drew my attention to him was one doleful fact about his passing: He lingered for 80 days after he was shot in July...

I have a minor obsession with the assassinated President James A. Garfield. What drew my attention to him was one doleful fact about his passing: He lingered for 80 days after he was shot in July...

  • presidents
  • new jersey
  • long branch
  • james a. garfield

At this point, on the Old Concord Road, as it then was, ended the midnight ride of Paul Revere

Plaque marking the endpoint of Paul Revere's famous midnight ride.  Submitted by Eli Anders (@elioanders) 

Plaque marking the endpoint of Paul Revere's famous midnight ride.  Submitted by Eli Anders (@elioanders) 

  • paul revere
  • revolutionary war
  • minutemen

Clover Hill

Maryland Historical Society plaque on the history of Clover Hill, near Johns Hopkins Homewood Campus Submitted by Eli Anders (@elioanders) 

Maryland Historical Society plaque on the history of Clover Hill, near Johns Hopkins Homewood Campus Submitted by Eli Anders (@elioanders) 

    AIDS Library of Philadelphia

    History of the Philadelphia AIDS Library.  Submitted by Eli Anders (@elioanders) 

    History of the Philadelphia AIDS Library.  Submitted by Eli Anders (@elioanders) 

    • philadelphia
    • aids
    • library

    Free African Society

    Free African Society Established in 1787 under the leadership of Richard Allen and Absalom Jones, this organization fostered identity, leadership, and unity among Blacks and became the forerunner...

    Free African Society Established in 1787 under the leadership of Richard Allen and Absalom Jones, this organization fostered identity, leadership, and unity among Blacks and became the...

    • philadelphia
    • black history

    A Brief History of the Bone House and Graveyard

    A Brief History of the Bone House & Graveyard (Spa Fields Park) During the 1780s the land was leased as a burial ground and provided space for 2,722 interments. Eventually housing was built all...

    A Brief History of the Bone House & Graveyard (Spa Fields Park) During the 1780s the land was leased as a burial ground and provided space for 2,722 interments. Eventually housing was built...

    • london
    • spa fields park
    • graveyard
    • bone house

    Lady Bird Johnson Grove

     Lady Bird Johnson Grove   Dedicated in honor of Mrs. Johnson by Richard Nixon President of the United States August 27, 1969     In recognition of her devoted service to the cause of preserving...

     Lady Bird Johnson Grove   Dedicated in honor of Mrs. Johnson by Richard Nixon President of the United States August 27, 1969     In recognition of her devoted service to the cause of...

    • lbj
    • nixon
    • redwoods
    • nature
    • conservation

    Big Diamond

    "BIG DIAMOND," A CIRCUS ELEPHANT, EXPIRED NEAR HERE IN 1927. HIS SKINNED HULK WAS BURIED. YEARS LATER, BONES WERE UNEARTHED AND SPECULATION AROSE ABOUT A HUMBOLDT MASTODON UNTIL IN- VESTIGATORS...

    "BIG DIAMOND," A CIRCUS ELEPHANT, EXPIRED NEAR HERE IN 1927. HIS SKINNED HULK WAS BURIED. YEARS LATER, BONES WERE UNEARTHED AND SPECULATION AROSE ABOUT A HUMBOLDT MASTODON UNTIL IN-...

    • big diamond
    • elephant
    • mastodon
    • humboldt
    • ecv

    Kitty Hawk

    THE FIRST SUCCESSFUL FLIGHT OF AN AIRPLANEWAS MADE FROM THIS SPOT BY ORVILLE WRIGHT DECEMBER 17, 1908, IN A MACHINE DESIGNED AND BUILT BY WILBUR WRIGHT AND ORVILLE WRIGHT THIS TABLET WAS ERECTED...

    THE FIRST SUCCESSFUL FLIGHT OF AN AIRPLANEWAS MADE FROM THIS SPOT BY ORVILLE WRIGHT DECEMBER 17, 1908, IN A MACHINE DESIGNED AND BUILT BY WILBUR WRIGHT AND ORVILLE WRIGHT THIS TABLET WAS...

    • kitty hawk
    • wright brothers
    • airplane
    • flight

    Hutchison School

    Mary Grimes Hutchison (1872-1962), a pioneer in rigorous education for girls in Memphis, opened her school in the Wesley Halliburton home in 1902. By 1925, Hutchison School had become a leading...

    Mary Grimes Hutchison (1872-1962), a pioneer in rigorous education for girls in Memphis, opened her school in the Wesley Halliburton home in 1902. By 1925, Hutchison School had become a...

    • shelby county
    • tennessee

    Laid by the M. W. Grand Lodge of F. & A. M. of Washington

      Trim, Matthew Flinders' Intrepid Cat

      Trim   MATTHEW FLINDERS INTREPID CAT Who Circumnavigated Australia With His Master 1801 - 1803   And Thereafter Shared His Exile On The Island Of Mauritius Where He Met His Untimely Death  ...

      Trim   MATTHEW FLINDERS INTREPID CAT Who Circumnavigated Australia With His Master 1801 - 1803   And Thereafter Shared His Exile On The Island Of Mauritius Where He Met His Untimely Death  ...

        Centennial Celebration

        CENTENNIAL CELEBRATION IN COMMEMORATION OF THE VISIT OF PRESIDENT THEODORE ROOSEVELT'S "GREAT WHITE FLEET" TO SEATTLE IN MAY OF 1908, FROM HERE THE FLEET CONTINUED ON THEIR FAMOUS ROUND THE WORLD...

        CENTENNIAL CELEBRATION IN COMMEMORATION OF THE VISIT OF PRESIDENT THEODORE ROOSEVELT'S "GREAT WHITE FLEET" TO SEATTLE IN MAY OF 1908, FROM HERE THE FLEET CONTINUED ON THEIR FAMOUS ROUND THE WORLD...

        • 1908
        • round the world
        • roosevelt

        Bejamin Banneker

        BENJAMIN BANNEKER (1731-1806) THE SELF-EDUCATED NEGRO MATHEMATICIAN AND ASTRONOMER WAS BORN. LIVED HIS ENTIRE LIFE AND DIED NEAR HERE. HE ASSISTED IN SURVEYING THE DISTRICT OF COLUMBIA, 1791, AND...

        BENJAMIN BANNEKER (1731-1806) THE SELF-EDUCATED NEGRO MATHEMATICIAN AND ASTRONOMER WAS BORN. LIVED HIS ENTIRE LIFE AND DIED NEAR HERE. HE ASSISTED IN SURVEYING THE DISTRICT OF COLUMBIA, 1791,...

        • astronomer
        • african-american
        • 1791
        • jefferson
        • self-educated