Naxos is the biggest, but not the most populated island of the Cyclades. It played a major role in the ancient past - as center of the Cycladic culture. That being said, it is one of the most beautiful and interesting islands.
Naxos does have an impressive signature monument. It's called "portara" and it' is the entrance to a never fully built temple of Apollo. The old Greeks on Naxos, always big fans of appearances and aesthetics, didn't manage to finish the temple for various reasons, but they positioned the remains of the huge portal on a small island off the coast of the town as perfect as if they had invented Instagram themselves or as Apollo, the god of prophecy had foretold the important future photo hotspot for travel magazines and photo blogs.