Kastro village, Kastro, Sifnos Island, Cyclades, Greek Islands, Greece, Europe

cyclades greece whitewashed buildings yellow doors blue sky architecture travel summer mediterranean cobblestone streets scenic views history holiday destination culture tourism exploring traditional picturesque charming colorful sunny serene landmarks outdoor streetscape beautiful tranquility nature relaxation vacation walking tour local life aesthetics dreamy heritage vibrant coastal village hidden gems urban exploration lifestyle quaint beauty peaceful kastro village sifnos