Capital: The Valley . The Dutch built a small fort on Anguilla in 1631. Then, in the mid-17th Century, English settlers arrived and colonized the island. Anguilla is known as a quiet, peaceful island, with miles and miles of white sand beaches, all ringed by crystal clear waters. Tourism is the major industry, and visitors (many coming to scuba dive), arrive by air, while some take one of the convenient ferries linking Anguilla with Marigot, St. Martin. Anguilla is mostly flat land, with the highest point only 213 ft. above sea level. There are no rivers or streams, and the average high temperature is near 80