Casa de las Conchas, Salamanca, UNESCO World Heritage Site, Castile and Leon, Spain, Europe

salamanca spain unesco architecture heritage site twilight shell facade historical building tourist attraction spanish culture stone structure evening light cityscape travel destination exploration landmark beautiful sights cobblestone streets local history stunning visuals cultural significance architectural design historic sites peaceful ambiance urban exploration architectural heritage shell motifs illuminated buildings scenic views travel spain spain travel spanish history local attractions cultural heritage evening stroll historical landmarks sightseeing city landmarks historic architecture casa las conchas world heritage site castile