Gaspard-Félix Tournachon, commonly known as Nadar, was a French photographer, caricaturist, and balloonist born in 1820. He is renowned for his pioneering work in aerial photography and portrait photography, capturing notable figures of his time, including artists and writers. Nadar's innovative techniques and use of natural light significantly influenced the field of photography. In addition to his photography, Nadar was an accomplished caricaturist, contributing to various publications. He was also an early advocate for the use of hot air balloons, conducting aerial experiments that advanced the understanding of flight. His multifaceted career left a lasting impact on both the arts and sciences.