Seven Isles Homeowners Association The Seven Isles neighborhood comprises 315 households, with approximately 1,145 residents, and is situated north of Las Olas Boulevard. The Intracoastal Waterway borders the east and north boundaries, while the neighborhoods of Sunrise Key and Sunrise Intracoastal are to the north, the neighborhood of Central Beach is east of it, the neighborhoods of Idlewyld and Riviera Isles are to the south, Las Olas Isles is located southwest of it, and the neighborhood to the west of the Intracoastal Waterway is Nurmi Isles.[1][2] There are nine streets within the Seven Isles: Aqua Vista Boulevard, Barcelona Drive, Castilla Isle, Del Mar Place, De Sota Drive, De Sota Terrace, Pelican Isle, Sea Island Drive and Seven Isles Drive.

W.F. Morang arrived in Fort Lauderdale from Boston in the early 1920s and participated with other developers in the land boom era of 1923 to 1926. His company, W.F. Morang & Sons, Inc., helped develop and dredge some of the finger islands around the city including the 80 acres (320,000 m2) currently called the Seven Isles. Within these 80 acres (320,000 m2), his first projects included Rio Vista Isles where he dredged canals and built roads and bridges before dredging the area north of Las Olas Boulevard, which back then was called "Lauderdale Isles" (not to be confused with the present-day Lauderdale Isles neighborhood across from Riverland Village,) which included the isles of Aqua Vista, Barcelona, De Sota, Sea Island and Pelican Isle, as well as "Lauderdale Shores" (which includes Castilla and Del Mar).

The names of the seven isles are Aqua Vista (which means "Water View" in Latin,) Barcelona (after the city in Spain,) Castilla (a feminine noun of the Spanish word "Castle" or "Castillo,") Del Mar (which means "Of the Sea," in Spanish,) De Sota (which is a feminine form of the Spanish conquistador, Hernando De Soto's last name,) Pelican Isle, and Sea Island.

Though Morang built no homes and never completed the project, he began the building of a hotel. The Croissantania, at the eastern end of Aqua Vista Boulevard. The hotel had foundation work and walls, but construction was halted due to a material shortage which affected all of Southeast Florida after a steel yacht called the Prinz Valdemar, reputedly owned by German Kaiser Wilhelm I, mysteriously sank across the mouth of the harbor of Miami (present-day Port of Miami.)

This disaster shut off the major entry source of building materials for this project. The venture ended with the disastrous September 17, 1926 hurricane. The plans to dig Port Everglades were drawn and approved in 1926 due to the shutdown of Miami’s harbor, but it was many years until the port was put into use.

As part of the promotion for the sale of the then named "Lauderdale Isles-Lauderdale Shores," Morang erected massive twin columns based on two pedestals as a gateway to his development. The pedestals were set approximately 25 feet (7.6 m) apart and the columns extended skyward some forty feet. They were aligned on either side of a long canal giving maximum visual effect to someone standing on East Las Olas Boulevard and looking due north. At the north side of the seawall between the columns, a boat dock ramp was constructed and Mr. Morang hired a boat captain to conduct free sightseeing tours to prospective buyers.