Spiral Island, Floating artificial island near Puerto Aventuras, Mexico

Spiral Island is a floating artificial island and sculpture near Puerto Aventuras in Quintana Roo, Mexico, made from a network of roughly 250,000 plastic bottles held together with plywood and bamboo poles. The platform measures about 20 meters by 16 meters (66 feet by 52 feet) and supports a bungalow, solar panels, and several green spaces on its surface.

British artist Richart Sowa built the first version in 1998 off the Mexican coast and lived there for several years before Hurricane Emily destroyed it in 2005. He then began constructing a second, larger version that expanded on the original floating architecture concept.

The name Spiral Island comes from the spiral construction concept Sowa used to enlarge the original floating platform. The German source also links the name to Abraham Maslow's theories of human needs, though the spiral image for personal development goes back to Alfred Adler. Sowa, a self-described environmentalist and recycler, planted mangroves and other plants on the island.

Spiral Island no longer exists: Hurricane Emily destroyed it in 2005, and the replacement Joyxee Island was removed by local authorities in January 2019, so there is nothing to visit today. The original lay in a lagoon about one kilometre south of Puerto Aventuras, on the Yucatán peninsula's Caribbean coast. Sowa had been ordered to move it from the man-made canal in 2004 and spent a year tied to a loose rock pier before the storm ended the project.

The island's name is linked to the spiral building concept used to enlarge the original small platform, and German sources also connect it to Abraham Maslow's theories of human needs. Sowa, a musician, artist and carpenter from Middlesbrough, had already tested a prototype in Zipolite in 1997, destroyed four months later by Hurricane Pauline.