March 27 – Juan Ponce de León becomes the first European definitely known to sight the modern-day territory of the United States, specifically Florida, mistaking it for another island.
3月27日，胡安·庞塞·德莱昂成为第一个发现佛罗里达（现美国领土）的欧洲人，但他当时却误以为这是另一座岛屿。