Astor was a prominent figure in New York high society, attending exclusive events, hosting lavish parties, and setting trends for the wealthy elite. His social standing influenced fashion, entertainment, and the overall culture of the upper class.

Like many wealthy individuals of his time, Astor was a patron of the arts, supporting various cultural institutions and artistic endeavors. His patronage contributed to the vibrant artistic scene of New York City.

The Astoria and St. Regis Hotels, built under his supervision, became iconic establishments that shaped the standards for luxury hotels and hospitality. They attracted a wealthy clientele and influenced the development of the hospitality industry.