Or they're cultivated on a chinampa, which is a man-made island in a lake.
A canal within this depression gave the temple the appearance of a man-made island.
Approximately 30 percent of the area is a man-made island.
The tunnel would surface at a new, man-made island, nearly two miles across.
They form a garden in themselves, on the little man-made island.
A public wharf on a man-made island has dock space for up to 30 vessels.
The area comprises a string of man-made islands in a natural lake.
The canals and dams built for this purpose created a man-made island.
Brink takes place in the near future during the mid-21st century on a man-made floating island called the Ark.
The old airport lay across the narrow channel from the man-made island where they stood.