After the Privy Council demarcated Thomas Square's enlargement on March 8, 1850, the park was still merely a dusty field. A "cheap fence" was installed around 1873. Oats were sown and harvested and algaroba (kiawe) trees were planted soon after 1873, but there was still little shade. It was around this time that the merchant
Archibald Scott Cleghorn (husband of
Princess Miriam Likelike, father of Princess
Kaʻiulani, and brother-in-law of
Kalākaua and
Liliʻuokalani) began stewarding Thomas Square and Emma Square (Honolulu's only two parks at that point). By 1883, Cleghorn had approved Robert Stirling's park design, which laid out a series of circular and semicircular paths. Since Honolulu's treasury was in "dire condition" at the time, In 1925 it was made into a park managed by the
City and County of Honolulu. It was during this renovation period in 1932 that
The Outdoor Circle donated the central memorial fountain, dedicating it to the late Beatrice Castle Newcomb, who had been the President of the Outdoor Circle from 1922 to 1929. In 1938, The Daughters of Hawaii unveiled a plaque to commemorate the historic flag-raising event. In 1942, the US Army built barracks at Thomas Square to quarter troops during World War II. It was added to the
National Register of Historic Places listings in Oahu on April 25, 1972. It is state historic site 80-14-9990. In 2011, the sidewalk on the corner of South Beretania Street and Ward Avenue became an encampment site for (De)Occupy Honolulu, a Hawaiʻi affiliate of the
Occupy movement. As such, regular protests and police conflicts became a feature of the area until the encampment was permanently cleared. July 31 is celebrated as ''
Lā Ho'iho'i Ea'' or Restoration Day holiday. The park's pathways are in the form of the British flag. A fountain is in the center of the square, surrounded by trees. Across the street is the
Honolulu Museum of Art. Thomas Square is one of four sites in Hawaii where the Hawaiian flag is allowed to fly alone without the United States flag. The others are the Royal Mausoleum at
Mauna ʻAla,
ʻIolani Palace and
Puʻuhonua o Hōnaunau. ==References==