Frederiksted is both the town and one of the two administrative districts of St. Croix, U.S. Virgin Islands. It is a grid-planned city, designed by surveyor Jens Beckfor, originally to 14x14 blocks but built 7x7 to enhance the island commerce in the 1700s.
Wikipedia

The U.S. Virgin Islands are a group of Caribbean islands and islets. A U.S. territory, it's known for white-sand beaches, reefs and verdant hills. St. Thomas island is home to the capital, Charlotte Amalie. To the east is the island of St. John, most of which comprises Virgin Islands National Park. St. Croix island and its historic towns, Christiansted and Frederiksted, are to the south.
Wikipedia