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

Saint Anthony Falls Heritage Trail: The Barrel-Makers' Co- Ops

The red brick building at the corner of Third Avenue and First Street was one of many factories that supplied the barrels used  for flour. Called coopers, the skilled workers who made barrels...

The red brick building at the corner of Third Avenue and First Street was one of many factories that supplied the barrels used  for flour. Called coopers, the skilled workers who made...

    Circus fire: 1

    The first in a series of plaques about the Hartford Circus Fire. It reads: "2:40 PM...As the wild lion act ends, a small ball of flame breaks out high on the sidewall of the Ringling circus tent....

    The first in a series of plaques about the Hartford Circus Fire. It reads: "2:40 PM...As the wild lion act ends, a small ball of flame breaks out high on the sidewall of the Ringling circus tent....

    • hartford
    • circus
    • fire
    • disaster

    Dr. Gordon L. Chan

    In memory of Dr. Gordon L. Chan 1930-1996  who, to preserve the tidepool resources of this area, was instrumental in the creation of the Duxbury Reef Marine Reserve Submitted by Darren Platt

    In memory of Dr. Gordon L. Chan 1930-1996  who, to preserve the tidepool resources of this area, was instrumental in the creation of the Duxbury Reef Marine Reserve Submitted by Darren Platt

    • tidepool
    • bolinas
    • duxbury reef
    • sea anemone
    • 1930

    The Coventry Theatre

      The Coventry Theatre The New Hippodrome, as it was originally named, was opened on 1 November 1937. It was the third Hippodrome on this site, the first situated in Pool Meadow (1903) and the...

      The Coventry Theatre The New Hippodrome, as it was originally named, was opened on 1 November 1937. It was the third Hippodrome on this site, the first situated in Pool Meadow (1903) and...

    • coventry
    • england
    • hippodrome
    • theatre

    Apple Tree Cove - Kingston

    APPLE TREE COVE - KINGSTON  Apple Tree Cover was named by Lieut. Charles Wilkes, U.S.N., commanding the U.S. Exploring Expedition, which first charted Puget Sound, on May 18, 1841.The first...

    APPLE TREE COVE - KINGSTON  Apple Tree Cover was named by Lieut. Charles Wilkes, U.S.N., commanding the U.S. Exploring Expedition, which first charted Puget Sound, on May 18, 1841.The first...

    • kingston
    • apple tree cove
    • washington
    • puget sound
    • 1841

    Fire, Police and Sheriffs Department Memorial

    In Honored Memory Of Those Brave Members Of The Memphis & Shelby County Police, Fire & Sheriff's Departments Who Have, Since 1819, Died In Line Of Duty "Greater Love Hath No Man Than This That A...

    In Honored Memory Of Those Brave Members Of The Memphis & Shelby County Police, Fire & Sheriff's Departments Who Have, Since 1819, Died In Line Of Duty "Greater Love Hath No Man Than This That...

    • shelby county
    • tennessee

    Louis Burchett McFarland Clock Tower

    A Gift To The People Of Memphis By Judge Louis Burchette McFarland First Chairman Of Park Commission Founded In 1898. Submitted from the Shelby County Register's Office.

    A Gift To The People Of Memphis By Judge Louis Burchette McFarland First Chairman Of Park Commission Founded In 1898. Submitted from the Shelby County Register's Office.

    • shelby county
    • tennessee

    Mexican Independence From Spain

    1822  MEXICAN INDEPENDENCE FROM SPAIN  California acknowledges Mexico's independence from Spain, which was declared in 1821. Monterey remains capital of Alta California under Mexican rule.

    1822  MEXICAN INDEPENDENCE FROM SPAIN  California acknowledges Mexico's independence from Spain, which was declared in 1821. Monterey remains capital of Alta California under Mexican rule.

    • montgomery
    • mexico
    • spain
    • 1822
    • alta california

    Piers 1 1/2, 3 & 5

      Chew C. Sawyer1918-1973

      Chew C. Sawyer was a mid-twentieth century African-American entrepreneur. He founded Sawyer Realty Company, which later became Cornette Realty; Arnette Construction Company; Future Insurance...

      Chew C. Sawyer was a mid-twentieth century African-American entrepreneur. He founded Sawyer Realty Company, which later became Cornette Realty; Arnette Construction Company; Future Insurance...

      • shelby county
      • tennessee

      Rittenhouse Square

      Submitted by Lisa Hiltbrand

      Submitted by Lisa Hiltbrand

      • philadelphia
      • pennsylvania
      • penn
      • 1682
      • 1982
      • square
      • park

      Bishop Charles Harrison Mason1862-1961

      Bishop C.H. Mason founded the Church of God in Christ (COGIC) in the late 1890s. Born a slave near Bartlett, Tennessee, Mason served as Senior Bishop of the denomination from 1907 until his death...

      Bishop C.H. Mason founded the Church of God in Christ (COGIC) in the late 1890s. Born a slave near Bartlett, Tennessee, Mason served as Senior Bishop of the denomination from 1907 until his death...

      • shelby county
      • tennessee

      Fair Oaks Boulevard Bridge

      • bridge
      • sacramento
      • california

      John Denver Memorial

        Gilman Hall

        Gilman Hall was built in 1916-17 to accommodate an expanded College of Chemistry under the leader-ship of Gilbert Newton Lewis. This building provided research laboratories and teaching facilities...

        Gilman Hall was built in 1916-17 to accommodate an expanded College of Chemistry under the leader- ship of Gilbert Newton Lewis. This building provided research laboratories and...

        • berkeley
        • california
        • bay area
        • cal
        • chemistry
        • giaque
        • seaborg
        • tranuranium

        Dedicated to John Le Conte & Joseph Le Conte

        • berkeley
        • california
        • bay area
        • cal

        Dedicated to Henry Morse Stephens

        • berkeley
        • california
        • bay area
        • cal

        Manzanar

        Manzanar In the early part of World War II, 110,000 persons of Japanese ancestry were interned in relocation centers by Executive Order No. 9066, issued onFebruary 19, 1942. Manzanar, the first of...

        Manzanar In the early part of World War II, 110,000 persons of Japanese ancestry were interned in relocation centers by Executive Order No. 9066, issued onFebruary 19, 1942. Manzanar, the first...

        • manzanar
        • california
        • internment camps
        • wwii
        • 99pi
        • concentration camps

        Folsom Pony Express Terminus

        FOLSOM PONY EXPRESS TERMINUS GOLD RUSH AND RAILROAD TOWN FOLSOM BECAME THE WESTERN TERMINUS OF THE CENTRAL OVERLAND PONY EXPRESS ON JULY 1, 1860. DURING ITS FIRST FEW MONTHS, AFTER APRIL 4, 1860,...

        FOLSOM PONY EXPRESS TERMINUS GOLD RUSH AND RAILROAD TOWN FOLSOM BECAME THE WESTERN TERMINUS OF THE CENTRAL OVERLAND PONY EXPRESS ON JULY 1, 1860. DURING ITS FIRST FEW MONTHS, AFTER APRIL 4, 1860,...

        • folsom
        • california
        • pony express

        The Oldest Wood School in the USA

        • st augustine
        • florida
        • wood school
        • oldest