Luna nodded, “Actually, I do. There is a small fortress a day's travel from Canterlot. I have checked and while it’s still maintained and kept supplied by the Guard, it is no longer in active use. Fortress may be overstating it a bit even, more like an oversized watch tower at the side of a mountain. Highly defensible and can be made comfortable for a month-long stay in less than a week. Including any teaching material and enough space for an attachment of both Solar and Nocturnis guards.”