Tall ships unfurl their sails and make for the open sea, while harbor seals, porpoises and whales play in the wide blue bay. From the mid-1800s until the great fire of 1947, Bar Harbor was a haven for wealthy summer visitors who built shingled, 60-room "summer cottages" on rocky promontories and islands. Today, the main interest is Acadia National Park, a magnificent landscape of towering coastal mountains and coves, lakes, hundreds of streams and ponds, and Somes Sound, a splendid glacial-carved fjord.