Monastery of Alcobaca, UNESCO World Heritage Site, Alcobaca, Oeste, Portugal, Europe

alcobaca monastery unesco world heritage west portugal historical site architecture interior church cloister medieval stone pillars arched ceilings tranquility light cultural heritage historical architecture gothic roman style tourism travel exploration visiting sanctuary heritage religious site sightseeing ancient peaceful sacred space design craftsmanship landmarks cultural significance stone carvings community history iconic structures leisure education spirituality preservation pilgrimage visitors aesthetic heritage site architectural beauty octagonal pillars historical significance vibrant culture