Released in 1988, Avenir is a geometric sans-serif typeface designed by legendary type designer Adrian Frutiger, best known for his Univers and Frutiger designs. Although modeled after Futura (“avenir” is the French word for “future”) and classified as a geometric sans, Avenir has some slightly humanist features that add warmth to the face, such as the tail on the “t” and the “o” that isn’t a perfect circle. Frutiger considered Avenir his finest work and it was voted the top favorite font of designers in a recent poll I did on Typewolf. Avenir is available in six weights — light, book, roman, medium, heavy and black — each with corresponding oblique styles.
If you are looking for an alternative to Avenir, I recommend checking out Neuzeit and Larsseit. I think Century Schoolbook would make a nice font combination paired with it.