Passy is an area of Paris, France, located in the 16th arrondissement, on the Right Bank. It is traditionally home to many of the city's wealthiest residents. Passy was a commune on the outskirts of Paris. In 1658, hot springs were discovered around which spa facilities were developed. This attracted Parisian society and English visitors, some of whom made the area, which combined attractive countryside with both modest houses and fine residences, their winter retreat. The population was 2,400 in 1836, 4,545 in 1841, but larger in summer. In 1861 the population was 11,431. Passy's population was 17,594 when it was absorbed into Paris along with several other communities in 1860.