scenic mountain path leading to bilbilis roman ruins in calatayud

activity adventure ancient archaeology architecture attraction beautiful bilbilis calatayud civilization couple cultural destination european experience exploration footpath heritage hiker hikers hiking historic historical history idyllic journey landmark landscape leisure mediterranean mountain nature outdoor outdoors path pathway peaceful picturesque roman route ruins scene scenic serene site spain spanish summer tourism tourist town trail tranquil travel travelers vacation view walk walking wanderers wanderlust zaragoza