Amoreira Aqueduct, Elvas, UNESCO World Heritage Site, Alentejo, Portugal, Europe

amoreira aqueduct elvas alentejo portugal unesco architecture historical landmark aqueducts travel tourism sightseeing culture heritage sunny day green fields landscape arches stone structure outdoor history exploration nature scenic view beauty iconic sites ancient infrastructure engineering marvel european heritage countryside serene landmark vibrant sky clouds blue sky lush flora unique structures built heritage heritage conservation outdoor recreation relaxation tranquility travel destination autumn skies amoreira aqueduct