Fodor's Expert Review Bourtzihos

This lovely presence on Skiathos harbor stands on a small, pine-covered peninsula that divides the main port. It was built in 1207 by the Venetian Gyzi brothers to protect Skiathos from pirate attacks. Not much remains of the original fortress (also called the castle of St. George), but a cultural center at the site hosts concerts in the summer, as well as art and antiquities exhibitions. Many tranquil, refreshing spots provide views over the busy waterfront.