Santa Trinita has a worn brick facade, meant to have been faced with stone or marble. The church was damaged in the 1915 Avezzano earthquake, and reopened five years later. The frieze in front reads "SS[Santissimi] TRINITA ET B[eata] MARIAE VIRGINI". The second floor has a modern stained glass depiction of the Virgin. The interior has marble and stucco decoration. The painting in the apse was commissioned by Strozzi from Girolamo Troppa and depicts the "Coronation of the Virgin with Saints Jerome and Antony".