covered with lighting - could easily be made into an indoor arena later or at least somewhat more sheltered
Building An Arena at Home~Create the perfect space to ride your horse on your own property.
Outdoor Riding Arena Plans | ... jpeg horse arena failure http www gestech net horse arena failure htm
Outdoor Ventilated Screen Material on Horse Arena
Round pen connected to arena. Great idea plus it looks really nice. The only think I'd change would be that I'd add another gate on the outside of the round pen.
Building a horse-riding arena: Thinking outside the rectangle - Features - Horsetalk.co.nz
Most Common Mistakes When Building An Outdoor Equestrian Arena
Horse Arena and Barn Combos Stalls. I'd also make run out pens for the horses that are connected to their stalls.
European Country Manor-Horse Farm
Horse Arena... love this fencing