At the strike of midnight, the new republic was born to the cheers of hundreds of people lining Chamberlain Bridge in the capital, Bridgetown. A 21 gun salute fired as the national anthem of Barbados was played over a crowded Heroes Square.
Prince Charles, heir to the British throne, stood somberly as Queen Elizabeth's royal standard was lowered and the new Barbados declared, a step which republicans hope will spur discussion of similar proposals in other former British colonies that have the Queen as their sovereign.
"We the people must give Republic Barbados its spirit and its substance," President Sandra Mason, the island's first president, said. "We must shape its future. We are each other’s and our nation’s keepers. We the people are Barbados."
Barbados casts the removal of Elizabeth II, who is still queen of 15 other realms including the United Kingdom, Australia, Canada and Jamaica, as a way to finally break with the demons of its colonial history.
"The creation of this republic offers a new beginning," said Prince Charles, whose mother sent her warmest wishes.
"From the darkest days of our past and the appalling atrocity of slavery which forever stains our history, people of this island forged their path with extraordinary fortitude."
After a dazzling display of Barbadian dance and music, complete with speeches celebrating the end of colonialism, Barbadian singer Rihanna was declared a national hero by Prime Minister Mia Mottley, the leader of Barbados' republican movement.
The birth of the republic, 55 years to the day since Barbados declared independence, unclasps almost all the colonial bonds that have kept the tiny island tied to England since an English ship claimed it for King James I in 1625.
It may also be a harbinger of a broader attempt by other former colonies to cut ties to the British monarchy as it braces for the end of Elizabeth's nearly 70-year reign and the future accession of Charles.
"Full stop this colonial page," Winston Farrell, a Barbadian poet told the ceremony. "Some have grown up stupid under the Union Jack, lost in the castle of their skin."
"It is about us, rising out of the cane fields, reclaiming our history," he said. "End all that she mean, put a Bajan there instead."
Prince Charles' speech highlighted the continuing friendship of the two nations though he acknowledged the horrors of the trans-Atlantic slave trade.
While Britain casts slavery as a sin of the past, some Barbadians are calling for compensation from Britain.
Activist David Denny celebrated the creation of the republic but said he opposes the visit by Prince Charles, noting the royal family for centuries benefited from the slave trade.
"Our movement would also like the royal family to pay a reparation," Denny said in an interview in Bridgetown.
The English initially used white British indentured servants to toil on the plantations of tobacco, cotton, indigo and sugar, but Barbados in just a few decades would become England's first truly profitable slave society.
Barbados received 600,000 enslaved Africans between 1627 and 1833, who were put to work in the sugar plantations, earning fortunes for the English owners.
More than 10 million Africans were shackled into the Atlantic slave trade by European nations between the 15th and 19th centuries. Those who survived the often brutal voyage, ended up toiling on plantations.
"I'm overjoyed," Ras Binghi, a Bridgetown cobbler, told Reuters ahead of the ceremony. Binghi said he would be saluting the new republic with a drink and a smoke.
Barbados will remain a republic within the Commonwealth, a grouping of 54 countries across Africa, Asia, the Americas and Europe.
Outside the lavish official ceremony, some Barbadians said they were uncertain what the transition to a republic even meant or why it mattered.