Opal Lee, known as the “grandmother of Juneteenth,” celebrated her 100th birthday by kicking off construction of a museum in her hometown of Fort Worth, Texas, dedicated to the history of Juneteenth, the holiday commemorating the end of slavery in the U.S. ▻ ↧ Opal Lee celebrates 100th birthday by kicking off construction of J... Opal Lee celebrated her 100th birthday by kicking off the start of construction of a museum in her Texas hometown dedicated to telling the history of Juneteenth, the holiday commemorating the end of slavery in the U.S. Lee became known as the “grandmot...