Seven Martyrs Church, Kastro, Sifnos Island, Cyclades, Greek Islands, Greece, Europe

kastro greece coastal pathway aegean sea sunset travel architecture spirituality cliff view historical site tourism natural beauty island life greek islands peaceful scenery landscape serenity hiking exploration path adventure scenic view cultural heritage ocean view daylight blue sky rocky coast vibrant colors outdoor experience nature coastline tranquility seascape traditional architecture destinations picturesque summer travel winding road mediterranean greek culture religion landmark pilgrimage cliffside holy site seven