What is the oldest public park in the US?

Boston Common is a central public park in downtown Boston, Massachusetts. It is sometimes referred to as the "Boston Commons". The Common was used as a camp by the British before the American Revolutionary War. Today, the Common serves as a public park for all to use for formal or informal gatherings. Events such as concerts, protests, softball games, and ice skating (on Frog Pond) often take place in the park. Famous individuals such as Martin Luther King Jr. and Pope John Paul II have made speeches there. The park dates back to the early 1600's. It is the oldest city park in the United States. True park status seems to have emerged no later than 1830, when the grazing of cows was ended and renaming the Common as Washington Park was proposed.

Yellowstone dates to March 1, 1872

Elm Park is interesting but not the oldest. On the gates leading into the park there is an inscription. "This section of Elm Park containing 27 acres deeded to the city of Worcester March 17 and March 20 1854 by Levi Lincoln and John Hammond was the first purchase of land for a public park in the United States."

Bushnell Park was the first park to be developed by public funds. In Oct 1853 the Hartford city council voted to purchase the land. It was approved by voters in Jan 1854 making it the first municipal park in the nation to be conceived, built and paid for by citizens through a popular vote.