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

Paradise Valley

Formerly the intersection of Adams Avenue and St. Antoine Street, this site was once part of Paradise Valley, Detroit's African American business and entertainment district. From the 1930s into...

Formerly the intersection of Adams Avenue and St. Antoine Street, this site was once part of Paradise Valley, Detroit's African American business and entertainment district. From the 1930s into...

  • michigan
  • african american
  • duke ellington
  • dinah washington
  • freeways

Took Possession of These Lands on Behalf of His Catholic Majesty

In homage to the Spanish expedition composed of the ships SAN SALVADOR, VICTORIA, AND SAN MIGUEL that arrived at San Diego on 28th September 1542 under the command of JUAN RODRIGUEZ CABRILLO who...

In homage to the Spanish expedition composed of the ships SAN SALVADOR, VICTORIA, AND SAN MIGUEL that arrived at San Diego on 28th September 1542 under the command of JUAN RODRIGUEZ CABRILLO who...

  • san diego
  • california
  • spain
  • 1542
  • cabrillo

Western Headquarters of the Pony Express

  • pony express
  • san francisco
  • california
  • finney
  • leavenworth

For Whom Montgomery Street Was Named

ON JULY 9, 1846, IN THE EARLY MORNING IN "THE DAYS WHEN THE WATER CAME UP TO MONTGOMERY STREET,"  COMMANDER JOHN B. MONTGOMERY - FOR WHOM MONTGOMERY STREET WAS NAMED - LANDED NEAR THIS SPOT FROM...

ON JULY 9, 1846, IN THE EARLY MORNING IN "THE DAYS WHEN THE WATER CAME UP TO MONTGOMERY STREET,"  COMMANDER JOHN B. MONTGOMERY - FOR WHOM MONTGOMERY STREET WAS NAMED - LANDED NEAR THIS SPOT FROM...

  • san francisco
  • bay area
  • california
  • montgomery
  • portsmouth
  • sloop-of-war

The San Rafael Reef

    Crossing the river

      Spotted Wolf Canyon

        Easternmost Point in North America

        Submitted by Helen Zaltzman

        Submitted by Helen Zaltzman

        • canada
        • north american
        • easterly

        First public school in California

        THIS MARKS THE SITE OF THE FIRST PUBLIC SCHOOL IN CALIFORNIA ERECTED IN 1847    OPENED APRIL 3, 1848 THIS COMMEMORATIVE MARKER WAS ERECTED IN 1957 BY THE GRAND LODGE OF FREE AND ACCEPTED MASON OF...

        THIS MARKS THE SITE OF THE FIRST PUBLIC SCHOOL IN CALIFORNIA ERECTED IN 1847    OPENED APRIL 3, 1848 THIS COMMEMORATIVE MARKER WAS ERECTED IN 1957 BY THE GRAND LODGE OF FREE AND ACCEPTED MASON...

        • san francisco
        • bay area
        • california
        • school
        • 1847

        Edmonton House

        Submitted by @YuEuG .

        Submitted by @YuEuG .

        • edmonton
        • walter
        • canada

        Alley Pond Giant

        The Alley Pond Giant.   Measured in the year 2000 at a height of 133.8 feet with a girth of 18.6 feet, this tulip tree may be the tallest and oldest living organism in the city. 

        The Alley Pond Giant.   Measured in the year 2000 at a height of 133.8 feet with a girth of 18.6 feet, this tulip tree may be the tallest and oldest living organism in the city. 

        • alley pond giant
        • new york
        • nyc
        • oldest living thing

        Santa Barbara -- Puerto Vallarta

        SANTA BARBARA - PUERTO VALLARTA  SISTER CITIES IN MEMORY OF MICHAEL J. LEMUS M.D. 1918 - 1991 A RECOGNITION OF CULTURAL DIVERSITY AND SHARED HUMANITY 

        SANTA BARBARA - PUERTO VALLARTA  SISTER CITIES IN MEMORY OF MICHAEL J. LEMUS M.D. 1918 - 1991 A RECOGNITION OF CULTURAL DIVERSITY AND SHARED HUMANITY 

        • santa barbara
        • california
        • puerto vallarta

        Boyle and Hooke

         In a house on this site between 1655 and 1668 lived Robert Boyle. Here he discovered Boyle's Law and made experiments with an air pump designed by his assistant Robert Hooke, inventor, scientist...

         In a house on this site between 1655 and 1668 lived Robert Boyle. Here he discovered Boyle's Law and made experiments with an air pump designed by his assistant Robert Hooke, inventor,...

          William Stewart Memorial Music Shell

          William Stewart Memorial Music Shell   This music shell is dedicated to the man who built an unparalleled instrumental music department for the Muskegon Public Schools from 1936 until his death in...

          William Stewart Memorial Music Shell   This music shell is dedicated to the man who built an unparalleled instrumental music department for the Muskegon Public Schools from 1936 until his death in...

            Millstone from the Bates Flour Mill

            MILLSTONE FROM THE BATES FLOUR MILL This Limestone Millstone Was Donated To The Dexter Area Historical Society By Erwin and JoAnn Mast SEPTEMBER 14TH 1990   THE BATES MILL SITE: THE SOUTHWEST...

            MILLSTONE FROM THE BATES FLOUR MILL This Limestone Millstone Was Donated To The Dexter Area Historical Society By Erwin and JoAnn Mast SEPTEMBER 14TH 1990   THE BATES MILL SITE: THE SOUTHWEST...