Murillo de Gallego Bridge in Huesca over a turquoise river, surrounded by lush greenery, aerial view

murillo de gallego bridge huesca aerial view turquoise river greenery scenic architecture transport travel destination spanish landscape riverbank ancient structure connectivity natural beauty outdoor tourism historical aragon region landmark engineering infrastructure aerial shot summer remote tranquility exploration stone bridge lush vegetation road crossing valley river crossing spain countryside nature heritage drone footage panoramic view old bridge waterway forest sunlight mountainous rural