Yup we have a huge indoor arena and round pen and hot walker all under the barn roof with 90 inside stalls and several outside pens. There are about 100 horses in there right now but since it's a "training" barn and not really a "boarder" barn is really pretty quiet. The trainers have their hours they do lessons and work with the horses they train but its really got a lot of free time to use the arena. You can use it at any time as long as you don't get in the trainer's way, which is generally very easy to do.