Beneath a towering cliff the Buna river is born whole from its cave — and directly on the spring leans the 15th-century Blagaj tekke in white timber: among the Balkans' calmest, most photographed corners by visitors' consensus. Enter the tekke (modest cover provided at the door) — its spring-side rooms hold the serenity's essence; bank restaurants grill salmon fresh from this very river for the trip's ideal lunch; always one day with Mostar, twenty minutes apart.