Same as the colossal metropolis New York, Athens also is a city that never sleeps. Looking at this colorful photo, I remember how fascinated I was, watching a city so ancient, living to the fullest every time of the day and night! Monastiraki Square is a connection point of several metro lines, and a center of trade with the famous flea market and a variety of shops and restaurants.
More about this image here: https://sumfinity.com/hdr-photos/greece/athens/monastiraki-square-at-night/