Training in the numerous skills needed to become a successful and at least moderately-long-lived adventurer is one of main things the Guild of Free Adventurers exists to provide, and much of the physical training (particularly for junior members) takes place at the Practice Yard, located just south of the Main Hall across the square.
The yard is a walled court, paved in cobblestones and ringed by guild-owned buildings. Trainers and their students often meet in the middle of the court for exercises, while the buildings contain more sheltered training areas, instructors' quarters, equipment storage, and the like.