If Santorini and Mykonos are the superstars of the Cyclade Islands, Syros is its bastion of authentic Greek life. Founded during the Greek Revolution in the 1820s, the capital city of Ermoupoli is a dreamscape of pastel-colored neoclassical buildings and grand churches. Savor the ‘Duchess of the Aegean’ with visits to Plateia Miaouli, Ermoupoli’s marble-paved square; St George’s Cathedral atop the medieval hilltop settlement of Ano Syros; and Vaporia, the city’s most picturesque quarter, brimming with architectural splendor, ornate mansions and the church of Saint Nikolas, the patron saint of Ermoupolis.