13. Neptune Memorial Reef
Est. Value Today: $1.5 million* Year Disappeared: N/A Year Discovered: 2012
The Neptune Memorial Reef was created by Gary Levine and Kim Brandell, and it cost around $1.5 million to construct. The Reef is an underwater columbarium (a structure that holds urns), and it is also the largest man-made reef in the world, covering around 600,000 square feet of the ocean floor, forty feet below the surface.
Neptune Memorial Reef, Solaria/YouTube
The Reef went through a huge permit process to ensure it was eco-friendly and able to withstand massive storms. Everything was approved, and now the sixteen-acre reef is a haven for sea life and divers. The Reef has a few famous inhabitants, including Julia Child, who was interred there in 2004.
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