La Paz, Bolivia is the highest capital city in the world. The city sits in a basin surrounded by mountains. As the city grew, it expanded uphill. As a result, the city's elevation varies between 10,500 and 13,500 feet above sea level, with an average elevation of 11,975 feet.
The highest state capital in the United States is Santa Fe, New Mexico. The city's average elevation is 7,260 feet above sea level. Santa Fe is also the oldest state capital in the United States, founded in 1610 by Don Juan de Onate as a province of New Spain during the colonial period.