The term "Tricentennial" refers to the 300th anniversary of a significant event, often celebrated with various festivities and commemorations. This milestone can apply to cities, countries, or historical events, marking three centuries since their founding or occurrence. For example, the United States celebrated its Tricentennial in 1976, marking 300 years since the founding of Jamestown, Virginia, the first permanent English settlement in North America. Such celebrations typically include parades, educational programs, and cultural events to honor the history and achievements of the past 300 years.