First opened in 1962 with a second phase of construction was completed in 1965, Trees Hall houses the School of Education's Department of Health and Physical Activity, various student recreation facilities, a pool that serves as the home to Pitt's varsity men's and women's swimming and diving teams, and the primary training facility for Pitt's varsity women's gymnastics team.

Trees Hall previously served as the primary home to the Pitt women's volleyball team from 1974-1981 until they moved into Fitzgerald Field House starting with the 1982 season.

1895) who donated $100,000 for the construction of the original Trees Gymnasium in 1912 which, now demolished, sat near the site of the present day Veterans Administration Hospital in Oakland.

In 2003, a Panthers' Wall of Fame was unveiled that featured plaques of every Pitt Swimming and Diving All-American as well as conference and meet championship trophies.

[23] The gymnastics team holds its home meets in Fitzgerald Field House, which sits across Aliquippa Street from Trees Hall and is also connected by a tunnel.