In this photo provided by the Florida Keys News Bureau,...

In this photo provided by the Florida Keys News Bureau, chefs Paul Menta, front right and David Sloan, back right, put finishing touches on a gargantuan Key lime pie created for a 200th Florida Keys birthday celebration Monday, July 3, 2023, on Big Pine Key, Fla. The festivities took place on the 200th anniversary of the Florida Territorial Legislature's establishment of Monroe County, which contains the entire Keys island chain and a portion of Everglades National Park, on July 3, 1823. The pie measured 13.14 feet in diameter and contained 16 gallons of Key lime juice, and Keys officials intend to have it recognized as the world's largest. Credit: AP/Andy Newman

BIG PINE KEY, Fla. — Partying never gets old in the Florida Keys — especially for a milestone birthday like No. 200.

The Florida Keys celebrated its bicentennial Monday along the Gulf of Mexico with a Key lime pie more than 13 feet (4 meters) in diameter — which organizers intend to certify as a world record.

The festivities marked the anniversary of the Florida Territorial Legislature’s establishment of Monroe County on July 3, 1823 and celebrated its history. The county contains all of the Keys and a portion of Everglades National Park.

During the Civil War, Key West remained in Union hands as a base for a naval blockade of Confederate shipping. In the early 1900s, Standard Oil millionaire Henry Flagler spearheaded the construction of the Florida Keys Over-Sea Railroad that became widely known as the eighth wonder of the world.

And for nearly six months of his 1945-1953 presidency, Harry Truman governed the U.S. from his Key West “Little White House” that is now Florida’s only presidential museum.

Key lime pie, originating in late 1800s Key West, is a large part of the continental United States' southernmost island chain's heritage. In 2006, Key lime pie was designated Florida’s official pie by the state Legislature.

Monday’s bicentennial version of the creamy dessert, prepared by local chefs, featured a traditional graham-cracker crust and whipped cream topping as well as the juice from several thousand Key limes.

In this photo provided by the Florida Keys News Bureau,...

In this photo provided by the Florida Keys News Bureau, a measuring stick confirms the diameter of a gargantuan Key lime pie created for a 200th Florida Keys birthday celebration Monday, July 3, 2023, on Big Pine Key, Fla. The festivities took place on the 200th anniversary of the Florida Territorial Legislature's establishment of Monroe County, which contains the entire Keys island chain and a portion of Everglades National Park, on July 3, 1823. The pie measured 13.14 feet in diameter and contained 16 gallons of Key lime juice, and Keys officials intend to have it recognized as the world's largest. Credit: AP/Andy Newman

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'Disney on Ice' preview ... Climate change on LI ... LI's best pizza ... Get the latest news and more great videos at NewsdayTV

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