training center; training venue
A place where a workshop, seminar, or training course is held.
The training venue is a 5-minute walk from the station.
Tomorrow's safety training will be held in the conference room on the 3rd floor.
講習会 is the training course or workshop itself, while 講習会場 is the physical venue where it takes place.
会場 is a general term for any meeting place or venue; 講習会場 specifies that it is for a training course.
Compound of 講習 (kōshū, 'training, short course') + 会場 (kaijō, 'meeting place, venue').